High voltage ZnSe/CuInSe[sub 2] solar cells

Conference · Thu Jun 30 04:00:00 EDT 1994 · AIP Conference Proceedings (American Institute of Physics); (United States)

OSTI ID:7258185

Olsen, L C; Addis, F W ^[1]

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1. Washington State University at Tri-Cities, 100 Sprout Rd., Richland, Washington 99352 (United States)

This paper describes investigations of CIS solar cells based on ZnSe window layers deposited by MOCVD. Investigations of ZnSe/CIS solar cells are being carried out to determine if ZnSe is a viable alternative to CdS as a window material. MOCVD growth of ZnSe is accomplished in a SPIRE 500XT reactor and conductive n-type ZnSe is grown by using iodine as a dopant. ZnSe films have been grown on CIS substrates at 200 [degree]C to 250 [degree]C. ZnO is also being deposited by MOCVD by reacting tetrahydrofuran (THF) with a zinc adduct. ZnSe/CIS heterojunctions have been studied by growing n-ZnSe films onto 2 cm [times] 2 cm CIS substrates diced from materials supplied by Siemens. Test cells are fabricated by depositing thin, transparent Al contacts 2.8 mm in diameter on top of the ZnSe to serve as contacts. These test devices typically exhibit open circuit voltages [gt]500 mV and estimated active area efficiencies [gt]13%. Efforts to deposit ZnO onto ZnSe/CIS structures for top contact layers have usually resulted in photocurrent suppression, apparently due to interaction of the ZnO deposition process with the ZnSe layer. One approach used for cell fabrication involves the use of a protective layer between ZnO and ZnSe. A cell with a total area efficiency of 9.3% and a Voc of 509 mV has been fabricated.

• OSTI ID: 7258185
• Report Number(s): CONF-9310273--
• Conference Information: Journal Name: AIP Conference Proceedings (American Institute of Physics); (United States) Journal Volume: 306:1
• Country of Publication: United States
• Language: English

Related Subjects

14 SOLAR ENERGY
140501* -- Solar Energy Conversion-- Photovoltaic Conversion
CADMIUM COMPOUNDS
CADMIUM SULFIDES
CHALCOGENIDES
CHEMICAL COATING
CHEMICAL VAPOR DEPOSITION
COPPER SELENIDE SOLAR CELLS
DEPOSITION
DIRECT ENERGY CONVERTERS
ELECTRICAL PROPERTIES
EQUIPMENT
INDIUM COMPOUNDS
INDIUM SELENIDES
INORGANIC PHOSPHORS
IODINE ADDITIONS
OXIDES
OXYGEN COMPOUNDS
PHOSPHORS
PHOTOELECTRIC CELLS
PHOTOVOLTAIC CELLS
PHYSICAL PROPERTIES
SELENIDES
SELENIUM COMPOUNDS
SOLAR CELLS
SOLAR EQUIPMENT
SULFIDES
SULFUR COMPOUNDS
SURFACE COATING
ZINC COMPOUNDS
ZINC OXIDES
ZINC SELENIDES