Preparation and characteristics of CuGaSe/sub 2//CdS solar cells

Journal Article · Sat Jan 15 04:00:00 EST 1977 · Appl. Phys. Lett.; (United States)

DOI:https://doi.org/10.1063/1.89307· OSTI ID:7333098

Romeo, N; Sberveglieri, G; Tarricone, L; Paorici, C

p-CuGaSe/sub 2//n-CdS heterojunctions have been prepared by depositing CdS films on p-type CuGaSe/sub 2/ single crystals whose initial resistivity was 10/sup -2/ ..cap omega.. cm and changed to 1 ..cap omega.. cm after the CdS film deposition. The CdS films, which were grown by a multisources method, exhibit a room-temperature resistivity of 0.1 ..cap omega.. cm. The absolute quantum efficiency of these devices as photovoltaic detectors reaches the value of 80% at a wavelength of 5800 A. As solar cells, these heterojunctions at 25 degreeC display a solar power conversion efficiency of 5% when they are exposed to the solar light whose intensity is 71 mW/cm/sup 2/. When the heterojunctions are directly polarized, they emit light in a broad band which is centered at approx.7700 A. An external electroluminescent emission efficiency of about 0.05% has been measured at liquid-nitrogen temperature. (AIP)

• Research Organization: Istituto di Fisica, C.N.R.-G.N.S.M., Parma, Italy
• OSTI ID: 7333098
• Journal Information: Appl. Phys. Lett.; (United States), Journal Name: Appl. Phys. Lett.; (United States) Vol. 30:2; ISSN APPLA
• Country of Publication: United States
• Language: English

Related Subjects

14 SOLAR ENERGY
140501* -- Solar Energy Conversion-- Photovoltaic Conversion
CADMIUM COMPOUNDS
CADMIUM SULFIDES
CHALCOGENIDES
CONVERSION
COPPER COMPOUNDS
COPPER SELENIDES
DIRECT ENERGY CONVERTERS
EFFICIENCY
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELECTROLUMINESCENCE
ENERGY CONVERSION
FILMS
GALLIUM COMPOUNDS
GALLIUM SELENIDES
INORGANIC PHOSPHORS
JUNCTION DIODES
LUMINESCENCE
PHOSPHORS
PHOTOELECTRIC CELLS
PHOTOVOLTAIC CELLS
PHYSICAL PROPERTIES
SELENIDES
SELENIUM COMPOUNDS
SEMICONDUCTOR DEVICES
SEMICONDUCTOR DIODES
SOLAR CELLS
SOLAR ENERGY CONVERSION
SULFIDES
SULFUR COMPOUNDS
TRANSITION ELEMENT COMPOUNDS