Analysis of fill factor losses in thin film CdS/CdTe photovoltaic devicesPotlog, Tamara; Spalatu, Nicolae; Ciobanu, V.; Hiie, Jaan; Mere, Arvo; Mikli, Valdek; Valdna, VelloMoldavian journal of the physical sciences2010 / 3/4, p. 363-367 Anneealing of bulk crystalline CdTe under CdCl2 controlled vapor pressureHiie, Jaan; Valdna, VelloE-MRS Spring Meeting : Strasbourg, 1999 : abstracts1999 / p. O-32 CdS and CdSe microphotonresistor for optoelectronicsAltosaar, Mare; Kukk, Peeter-Enn; Mellikov, Enn; Valdna, Vello9th International Symposium of the Technical Commitee on Photon-Detectors, Visegrad, 9 - 12 september 1980 : proceedings International Measurement Confederation IMEKO : [abstracts]1980 / p. 12-13 Chemistry of CdCl2:O2 flux for CdTe solar cell technologyHiie, Jaan; Valdna, Vello; Kois, Julia; Danilson, Mati; Mikli, ValdekProceedings of the 19th EPVSECE conference2004 / p. 927 Chlorine doping of cadmium sulfide on the example of CBD CdSHiie, Jaan; Quinci, Frederico; Lughi, Vanni; Sergo, Valter; Valdna, Vello; Mikli, Valdek; Kärber, Erki; Raadik, TaaviThin-film compound semiconductor photovoltaics - 20092009 / p. M08-17 https://www.cambridge.org/core/journals/mrs-online-proceedings-library-archive/article/abs/chlorine-doping-of-cadmium-sulfide-on-the-example-of-cbd-cds/070F0DAEB40CD83B771895FED27CBEA1 Comparative study of CdS films annealed in neutral, oxidizing and reducing atmospheresMaticiuc, Natalia; Kukk, Mart; Spalatu, Nicolae; Potlog, Tamara; Krunks, Malle; Valdna, Vello; Hiie, JaanEnergy procedia2014 / p. 77-84 : ill Comparative study of nanostructured CdS thin films prepared by CBD and spray pyrolysis : annealing effectHiie, Jaan; Dedova, Tatjana; Valdna, Vello; Muska, KatriThin solid films2006 / p. 443-447 : ill Complex defects in Cl doped ZnTe and CdTeValdna, VelloMaterials Research Society symposia proceedings series1997 / p. 585-591: ill Complex defects in Cl doped ZnTe and CdTeValdna, VelloMRS Fall Meeting, Boston, 1996 : abstracts. 11996 Complex defects in ZnSe-based phosphorsValdna, Vello; Durst, R.; Hiie, Jaan; Jones, L.; Kallavus, UrveProc. Euromat '99. Vol. 132000 / p. 112-116 Conductivity conversion in CdTe layersValdna, Vello; Buschmann, Felix; Mellikov, EnnJournal of crystal growth1996 / p. 164-167: ill Control of p-type conductivity in CdTe by CdCl2 vapor phase treatmentHiie, Jaan; Valdna, VelloProc. Euromat '99. Vol. 132000 / p. 261-266 Deep center luminescence in p-type CdTeKrustok, Jüri; Valdna, Vello; Hjelt, Kari; Collan, HeikkiJournal of applied physics1996 / 3, p. 1757-1762: ill Defects in CdTe-based photodetectorsValdna, VelloMaterials Research Society Symposia proceedings series2000 / p. 241-246 : ill Defects in chlorine doped CdTe thin filmsValdna, Vello; Hiie, Jaan; Gavrilov, AlekseiAbstracts POLYSE2000 / p. 36 Defects in chlorine-doped CdTe thin filmsValdna, Vello; Hiie, Jaan; Gavrilov, AlekseiSolid state phenomena2001 / p. 155-160 : ill Eesti teaduse arengut pidurdavad probleemidValdna, VelloÕpetajate Leht2013 / lk. 10 https://opleht.ee/2013/10/eesti-teaduse-arengut-pidurdavad-probleemid/ Eestis ei märgata häid tulemusiValdna, VelloTallinna Tehnikaülikooli aastaraamat 20062007 / lk. 327-328 Eestis ei märgata häid tulemusi : [teadustöö hindamisest Eestis]Valdna, VelloPostimees2006 / 20. jaan., lk. 19 https://www.postimees.ee/1522535/eestis-ei-margata-haid-tulemusi Eestis ära põlatud leiutis teenib USA-s head kasumit : [TTÜ materjaliteaduse instituudi vanemteaduri Vello Valdna leiutatud röntgenluminofoorist]Laev, Sigrid; Valdna, VelloEesti Päevaleht2005 / lk. 5 : fot Effect of CdCl2 annealing treatment on structural and optoelectronic properties of close spaced sublimation CdTe/CdS thin film solar cells vs deposition conditionsSpalatu, Nicolae; Hiie, Jaan; Mikli, Valdek; Krunks, Malle; Valdna, Vello; Maticiuc, Natalia; Raadik, Taavi; Caraman, MihailThin solid films2015 / p. 128-133 : ill http://dx.doi.org/10.1016/j.tsf.2014.11.066 Effect of CdCl2 vapor phase pretreatment annealing on the properties of CSS CdS and CdTe/CdS thin film solar cellsSpalatu, Nicolae; Hiie, Jaan; Valdna, Vello; Krunks, Malle; Caraman, Mihail; Mikli, Valdek; Maticiuc, Natalia2014 Spring Meeting Lille, France : May 26-30. Symposium A, Thin film chalcogenide photovoltaic materials2014 / p. 17 Effect of the vacuum annealing on p-type CdTeValdna, VelloPhysica scripta1997 / p. 315-318: ill Efficiency limits of CdTe thin film solar cellsValdna, Vello; Hiie, JaanSeventeenth European Photovoltaic Solar Energy Conference : proceedings of the International Conference held in Munich, Germany, 22-26 October, 2001. Volume II2002 / p. 1233-1235 : ill Experimental studies of ZnS-based phosphorsValdna, Vello; Durst, R.; Mere, ArvoProc. Euromat '99. Vol. 132000 / p. 117-120 Formation of structure of the CdTe film, recrystallized on Mo/glass substrate under high temperature and mechanical pressureMikli, Valdek; Hiie, Jaan; Valdna, Vello; Viljus, Mart; Traksmaa, Rainer; Kallavus, UrveThin solid films2009 / 7, p. 2252-2255 : ill Fundamental studies for improved photovoltaic materials and devicesMellikov, Enn; Krunks, Malle; Altosaar, Mare; Krustok, Jüri; Valdna, VelloProceedings of International Conference QUANTSOL'99 : Wildhaus, Switzerland, 19991999 / p. 41-45 Group II-VI downconverting phosphorsValdna, Vello; Gavrish, T.; Hiie, Jaan; Mellikov, Enn; Mere, ArvoMaterials Research Society symposia proceedings series1997 / p. 463-466: ill Group II-VI downconverting phosphorusValdna, Vello; Gavrish, T.; Hiie, Jaan; Mellikov, Enn; Mere, ArvoMRS Fall Meeting, Boston, 1996 : abstracts1996 / [1] p Influence of annealing in H2 atmosphere on the electrical properties of thin film CdSMaticiuc, Natalia; Hiie, Jaan; Potlog, Tamara; Valdna, Vello; Gavrilov, AlekseiMRS proceedings2011 / p. d14-05 Influence of copper and oxygen on the optoelectronic properties of chlorine doped CdTe fhin filmsValdna, VelloThin solid films2001 / p. 192-194 : ill Influence of copper and oxygen on the optoelectronic properties of chlorine doped CdTe thin filmsValdna, VelloAbstracts E-MRS-IUMRS2000 / p. N-22 Investigation of P-type conductivity in CdTe and ZnTeValdna, Vello; Hiie, Jaan; Krustok, Jüri; Mellikov, EnnInternational Conference Advanced Optical Materials and Devices, Riga, 19961996 / p. 204 Kalevipoeg ja teed : [kavatsuse Tallinna lahte püstitada Kalevipoja kuju mittetoetamisest ning ettepanekust saata Eesti noored riikliku stipendiumiga USA tehnoloogiaülikoolidesse õppima teede ja sildade ehitamist]Valdna, VelloPostimees2005 / 25. mai, lk. 8 : ill Keemiliselt sadestatud kaadmiumsulfiidi kilede lõõmutamisel toimuvad struktuursed muutusedPõldme, Nils; Hiie, Jaan; Mikli, Valdek; Raadik, Taavi; Valdna, Vello; Mere, Arvo; Gavrilov, Aleksei; Maticiuc, Natalia; Potlog, Tamara; Quinci, Frederico; Lughi, Vanni; Sergo, ValterXXXI Eesti keemiapäevad : [28. aprill 2010, Tallinn] : teaduskonverentsi teesid = 31st Estonian Chemistry Days : abstracts of scientific conference2010 / lk. 65 Kokku või lahku : [tehnika- ja humanitaarkõrgkoolide "ühe mütsi alla viimise" ideest]Valdna, VelloPostimees2006 / 11. apr., lk. 21 Kui pikk peab olema elektrikatkestusValdna, VelloTallinna Tehnikaülikooli aastaraamat 20032004 / lk. 169-170 Kui pikk peab olema elektrikatkestus : [poliitikud peavad väärtustama reaalharidust, insenerikoolitust ja tehnikateadusi]Valdna, VelloPostimees2003 / 23. sept., lk. 13 https://arvamus.postimees.ee/2049577/kui-pikk-peab-olema-elektrikatkestus Liquid optron on CdSe baseAltosaar, Mare; Valdna, Vello; Kukk, Peeter-Enn9th International Symposium of the Technical Commitee on Photon-Detectors, Visegrad, 9 - 12 september 1980 : proceedings International Measurement Confederation IMEKO : [abstracts]1980 / p. 10-11 Maailmateadus Kopli liinidel : Tehnikaülikooli teadlased otsivad võimalust, kuidas päikesest odavamalt elektrit teha : [töörühm: Enn Mellikov (juht), Malle Krunks, Mare Altosaar, Jüri Krustok ja Vello Valdna oma uurimistööst]Mellikov, Enn; Krunks, Malle; Altosaar, Mare; Krustok, Jüri; Valdna, Vello; Kändler, TiitEesti Päevaleht1998 / 14. jaan., lk. 10 : ill., fot Modeling of flux composition for thermal CdCl2:O2 annealing of polycrystalline CdTeHiie, Jaan; Valdna, Vello; Taklaja, AndresMat.Res.Soc.Symp.Proc. 7632004 / p. 397-402 Optoelectronic properties of CdSe - CdTe solid solutionsValdna, Vello; Mere, Arvo; Voronin, A.MatTech '91 : The Second European East-West Symposium on Materials and Processes, May 26-30, 1991 : abstracts1991 / p. 256 Optoelectronic properties of CdTe thin filmsValdna, VelloEUROMAT 99. Volume 9, Interface controlled materials2000 / p. 90-95 : ill Optoelectronic properties of chlorine and oxygen doped CdTe thin filmsValdna, VelloSolar energy materials and solar cells2005 / p. 369-373 : ill Oxygen codopant in Cl doped CdTe thin filmsValdna, VelloE-MRS Spring Meeting 2002 : June 18-21, 2002. Symposium B, Thin Film Chalcogenide Photovoltaic Materials2002 / p. B-26 Photoconductive cells and photocouplers of A2B6 materialsValdna, VelloChair of Semiconductor Materials Technology : activity report, 1988-19931994 / p. 25-26 Photoconductivity formation in CdTe in the annealing processHiie, Jaan; Valdna, Vello; Altosaar, Mare; Mellikov, EnnInternational Conference Advanced Optical Materials and Devices, Riga, 19961996 / p. 197 Photoconductivity formation in CdTe in the annealing processHiie, Jaan; Valdna, Vello; Mellikov, Enn; Altosaar, MareOptical organic and semiconductor inorganic materials1997 / p. 123-129 Photoluminescence from deep acceptor - deep donor complexes in CdTeKrustok, Jüri; Collan, Heikki; Hjelt, Kari; Mädasson, Jaan; Valdna, VelloICL'96, Prague : International Conference on Luminescence and Optical Spectroscopy of Condensed Matter, Prague, Czech Republic, 18-23 August 19961996 / p. 1-17 Photoluminescence from deep acceptor - deep donor complexes in CdTeKrustok, Jüri; Collan, Heikki; Hjelt, Kari; Mädasson, Jaan; Valdna, VelloJournal of luminescence1997 / p. 103-105: ill Photoluminescence of Zn(SeTe) annealed phosphorsValdna, Vello; Mellikov, Enn; Mere, ArvoPhysica scripta1997 / p. 312-314 Photoluminescence of Zn(SeTe) annealed phosphorsValdna, Vello; Krustok, Jüri; Mellikov, Enn; Mere, ArvoAbstracts of 17th Nordic Semiconductor Meeting, June 17-20, 1996, Trondheim, Norway1996 / p. 70 Photoluminescence study of the 1.1 eV deep emission band in p-type CdTeHjelt, Kari; Collan, Heikki; Krustok, Jüri; Valdna, VelloProceedings of the XXX Annual Conference of the Finnish Physical Society : March 21-23, 1996, Espoo, Finland1996 / 8.29 Poliitik kallim kui teadlaneValdna, VelloPostimees2002 / 25. sept., lk. 12 Preparation and properties of CdTe films on Mo/glass substratesValdna, Vello; Grossberg, Maarja; Hiie, Jaan; Kallavus, Urve; Mikli, Valdek; Traksmaa, Rainer; Viljus, MartThin-film compound semiconductor photovoltaics - 20092009 / p. M08-24 https://www.researchgate.net/publication/231763435_Preparation_and_Properties_of_CdTe_Films_on_MoGlass_Substrates Properties of the CdCl2 air-annealed CSS CdTe thin filmsSpalatu, Nicolae; Hiie, Jaan; Valdna, Vello; Caraman, Mihail; Maticiuc, Natalia; Mikli, Valdek; Potlog, Tamara; Krunks, Malle; Lughi, VanniEnergy procedia2014 / p. 85-95 : ill Properties of the CdCl2 air-annealed CSS CdTe thin filmsSpalatu, Nicolae; Hiie, Jaan; Valdna, Vello; Maticiuc, Natalia; Krunks, Malle; Mikli, ValdekTÜ ja TTÜ doktorikool "Funktsionaalsed materjalid ja tehnoloogiad" : 04.-05. märts 2014, Tartu2014 / [1] p Properties of the CdCl2:O2 treated CSS CdTe thin filmsSpalatu, Nicolae; Caraman, Mihail; Maticiuc, Natalia; Hiie, Jaan; Valdna, Vello; Mikli, Valdek; Lughi, VanniE-MRS 2013 Spring Meeting. Symposium D, Advanced inorganic materials and structures for photovoltaics : poster session II2013 / p. 19 p-type doping of CdTeValdna, VelloAbstracts of the International Conference POLYSe'98 : Polycrystalline Semiconductors - Bulk Materials, Thin Films and Devices, 13-18 Sept. 1998, Schwäbisch Gmünd, Germany1998 / p. P27 p-type doping of CdTeValdna, VelloSolid state phenomena1999 / Polycrystalline Semiconductors V : Bulk Materials, Thin Films and Devices : Proceedings of the Fifth International Conference, held in Schwäbisch Gmünd, Germany, September 13-18, 1998, p. 309-314 Reversibility of CdS film properties depending on the nature of annealing gasMaticiuc, Natalia; Hiie, Jaan; Spalatu, Nicolae; Valdna, VelloE-MRS 2013 Spring Meeting. Symposium D, Advanced inorganic materials and structures for photovoltaics : poster session II2013 / p. 15-16 Scintillators for high efficiency and high spatial resolution in - ray imaging applicationsDiawara, Y.; Durst, R.D.; Mednikova, G.; Thorson, T.; Hiie, Jaan; Valdna, VelloHard x-ray and gamma-ray detector physics. V2004 / p. 119-125 https://www.researchgate.net/publication/252160844_Scintillators_for_high_efficiency_and_high_spatial_resolution_in_x-ray_imaging_applications Stability of chlorine-based complex defects in group II-VI semiconductorsValdna, VelloPhysica B2001 / p. 939-941 : ill Stability of p-type CdTe thin filmsValdna, VelloProceedings of EMRS 1999 Spring Meeting, Strasbourg, France, June 1-41999 / p. O-PS 3/P19 Structural and optical properties of cadmium sulfide thin films modified by hydrogen annealingMaticiuc, Natalia; Hiie, Jaan; Mikli, Valdek; Potlog, Tamara; Valdna, VelloMaterials science in semiconductor processing2014 / p. 169-174 : ill Structural changes in CBD CdS: effect of rapid thermal annealingHiie, Jaan; Quinci, Frederico; Lughi, Vanni; Maticiuc, Natalia; Potlog, Tamara; Mere, Arvo; Valdna, Vello; Gavrilov, Aleksei"Thin film chalcogenide photovoltaic materials" (Symposium M, EMRS 2010 Spring Meeting) : 7-11 June 2010, Strasbourg, France2010 Structural changes in chemically deposited CdS : effect of thermal annealingMaticiuc, Natalia; Potlog, Tamara; Hiie, Jaan; Mikli, Valdek; Põldme, Meeme; Raadik, Taavi; Valdna, Vello; Mere, Arvo; Gavrilov, Aleksei; Sergo, V.; Quinci, Frederico; Lughi, VanniMoldavian journal of the physical sciences2010 / 3/4, p. 275-279 Structural reproducibility of CdTe thin films deposited on different substrates by close space sublimation methodPotlog, Tamara; Spalatu, Nicolae; Maticiuc, Natalia; Hiie, Jaan; Valdna, Vello; Mikli, Valdek; Mere, ArvoPhysica status solidi (a) : applications and materials science2012 / p. 272-276 : ill https://ibn.idsi.md/ro/vizualizare_articol/188177 Synthesis and characterization of oxygen doped ZnTe for powder phosphor applicationKang, Z.T.; Menkara, H.; Wagner, B.K.; Summers, C.J.; Valdna, VelloJMR2005 / p. 2510-2515 (ZnCd)S and Zn(SeTe) downconverting phosphorsValdna, Vello; Hiie, Jaan; Mellikov, Enn; Mere, ArvoAbstracts of 17th Nordic Semiconductor Meeting, June 17-20, 1996, Trondheim, Norway1996 / p. 69 (ZnCd)S, (ZnCd)Se and Zn(Se, Te) downconverting phosphorsValdna, Vello; Hiie, Jaan; Mellikov, Enn; Mere, ArvoPhysica scripta1997 / p. 319 ZnCdSeTe radiation detectorsValdna, Vello; Hiie, Jaan; Strandberg, Marek; Traksmaa, Rainer; Viljus, MartOptolectronic Devices : Physics, Fabrication and Application. III2006 / [6] p https://www.researchgate.net/publication/253057744_ZnCdSeTe_radiation_detectors ZnCdSeTe semiconductor compounds : preparation and propertiesValdna, Vello; Grossberg, Maarja; Hiie, Jaan; Kallavus, Urve; Mikli, Valdek; Raadik, Taavi; Traksmaa, Rainer; Viljus, MartMRS proceedings2011 / p. u07-15 ZnSe1-xTex solid solutionsValdna, Vello; Hiie, Jaan; Kallavus, Urve; Mere, Arvo; Piibe, ToomasJournal of crystal growth1996 / p. 177-180: ill Teadlaste saavutused raha meelevalla allValdna, VelloPostimees2005 / 19. jaan., lk. 15 Teadlaste töömailt : Eesti teadlaste tulemuslikkusestValdna, VelloLinnaleht2006 / 20. jaan., lk. 8 Teadus ja poliitika, ehk, Kes päästavad maailma : [vajadusest tutvustada ajakirjanduses TTÜ materjaliteadlasi ja nende saavutusi]Valdna, VelloMente et Manu2006 / 26. apr., lk. 2 https://www.ester.ee/record=b1242496*est Teaduspreemia tehnikateaduste alal töö "Pooljuhtmaterjalid päikeseenergeetikale ja optoelektroonikale" eestMellikov, Enn; Altosaar, Mare; Krunks, Malle; Krustok, Jüri; Valdna, VelloEesti Vabariigi teaduspreemiad 19981998 / lk. 32-39: fotod Thermal analysis of CdTe : CdCl2 : O2 annealing processHiie, Jaan; Valdna, VelloSeventeenth European Photovoltaic Solar Energy Conference : proceedings of the International Conference held in Munich, Germany, 22-26 October, 2001. Volume II2002 / p. 1240-1242 : ill Thermal annealing effect on structural and electrical properties of chemical bath-deposited CdS filmsHiie, Jaan; Muska, Katri; Valdna, Vello; Mikli, Valdek; Taklaja, Andres; Gavrilov, AlekseiThin solid films2008 / 20, p. 7008-7012 : ill Tõkked teaduse eesValdna, VelloPostimees2002 / 4. okt., lk. 9 https://arvamus.postimees.ee/1969545/tokked-teaduse-ees Uuenduslikud teadusmullidValdna, VelloLinnaleht2006 / 10. veebr., lk. 8 Измерительный модулятор на фоторезисторахValdna, Vello; Rätsep, Ülo; Jaakson, A.Республиканская научно-техническая конференция, посвященная Дню радио : тезисы докладов1973 / с. 32 https://www.ester.ee/record=b1383925*est Малогабаритные приемники излученияAltosaar, Mare; Valdna, Vello; Varvas, Jüri; Hiie, Jaan"Фотометрические измерения и их метрологическое обеспечение", 1. всесоюзная научно-техническая конференция : тезисы докладов1974 / с. 9 https://www.ester.ee/record=b3927829*est Нестабильность и старение поликристаллических CdS и CdSe фоторезисторовValdna, Vello; Altosaar, Mare; Varvas, JüriПолупроводниковые материалы. 21972 / с. 97-108 : илл https://www.ester.ee/record=b1476073*est https://digikogu.taltech.ee/et/Item/75bd57ba-4543-4614-ab7c-3230cb13e005 О влиянии толщины рабочего слоя на фотопроводимость фоторезисторовValdna, VelloПолупроводниковые материалы. 21972 / с. 121-124 : илл https://www.ester.ee/record=b1476073*est https://digikogu.taltech.ee/et/Item/75bd57ba-4543-4614-ab7c-3230cb13e005 О причинах разброса параметров таблеточных фоторезисторов из селенида кадмияAltosaar, Mare; Valdna, VelloФизическая химия соединений AIIBVI1981 / с. 19-26 О работе таблеточных фоторезисторов в кремнийорганической жидкостиValdna, VelloФизическая химия соединений AIIBVI1981 / с. 27-34 О стабилизации селенисто-кадмиевых фоторезисторовValdna, Vello; Türn, LeoПолупроводниковые материалы. 21972 / с. 109-111 : илл https://www.ester.ee/record=b1476073*est https://digikogu.taltech.ee/et/Item/75bd57ba-4543-4614-ab7c-3230cb13e005 О старении электролюминесцентных диодовValdna, Vello; Varvas, JüriПолупроводниковые материалы. 21972 / с. 113-116 : илл https://www.ester.ee/record=b1476073*est https://digikogu.taltech.ee/et/Item/75bd57ba-4543-4614-ab7c-3230cb13e005 Об увеличении мощности рассеяния оптоэлектронного ключаValdna, Vello; Varvas, JüriПолупроводниковые материалы. 21972 / с. 117-120 : илл https://www.ester.ee/record=b1476073*est https://digikogu.taltech.ee/et/Item/75bd57ba-4543-4614-ab7c-3230cb13e005 Особенности легирования монозернистого селенида кадмия хлором и медьюHiie, Jaan; Mellikov, Enn; Krunks, Malle; Altosaar, Mare; Valdna, Vello; Varvas, JüriТретья Всесоюзная конференция по физико-химическим основам легирования полупроводниковых материалов, Москва, 20-22 окт. 1975 г. : Тезисы докладов1975 / с. 112 Особенности легирования фоторезисторов из селенида кадмия медью и серебромValdna, Vello; Mädasson, Jaan; Türn, LeoФизическая химия соединений А//II//В//VI//1987 / с. 32-39 Полупроводниковые материалыPalmre, Õie; Hiie, Jaan; Mellikov, Enn; Varema, Tiit; Iljina, Natalja; Altosaar, Mare; Valdna, Vello; Krunks, Malle; Karpenko, I.V.; Türn, Leo; Kerm, Karin; Tilling, Aino; Antsov, U.; Nõges, M.; Varvas, Jüri; Nirk, Tiit; Kallavus, Urve; Öpik, Andres; Lott, Kalju; Višnjakov, A.V.; Raukas, Maie; Paat, Aadu; Uder, Ülo-Olimar; Gavrilov, Aleksei; Danilov, J.V.; Katšurin, G.A.; Mere, Arvo1981 https://www.ester.ee/record=b1533413*est Полупроводниковые материалыVarvas, Jüri; Nirk, Tiit; Oja, Alar; Kerm, Karin; Raukas, Maie; Öpik, Andres; Ahven, Tarmo; Valdna, Vello; Mädasson, Jaan; Türn, Leo; Reiter, Eerik; Meiler, Boriss; Gavrilov, Aleksei; Veimer, Vladimir; Kurik, Lembit; Silas, Aarne1987 https://www.ester.ee/record=b1272914*est Полупроводниковые материалыRaukas, Maie; Nirk, Tiit; Varvas, Jüri; Nei, Toomas; Kerm, Karin; Lippmaa, J.; Öpik, Andres; Ahven, Tarmo; ALtosaar, Mare; Varema, Tiit; Valdna, Vello; Mellikov, Enn; Lott, Kalju; Türn, Leo1989 https://www.ester.ee/record=b1213709*est Рентгеноприемники на основе AIIBVI с использованием переизлучающих люминофоровAltosaar, Mare; Varema, Tiit; Valdna, Vello; Mellikov, EnnЭлектронные материалы1989 / с. 51-57 Фотопроводники для оптоэлектроникиValdna, Vello; Varvas, Jüri; Hiie, JaanРеспубликанская научно-техническая конференция, посвященная Дню радио : тезисы докладов1973 / с. 31 https://www.ester.ee/record=b1383925*est Фотоэлектрические свойства твердых растворов селенотеллуридов кадмияValdna, Vello; Voronin, A.I.; Mere, ArvoTallinna Tehnikaülikooli Toimetised1990 / lk. 30-39: ill