Photovoltaic properties of ZnO/CdTe heterojunctions prepared by spray pyrolysis

Journal Article · Fri Aug 01 04:00:00 EDT 1980 · J. Appl. Phys.; (United States)

DOI:https://doi.org/10.1063/1.328243· OSTI ID:5220557

Aranovich, J A; Golmayo, D; Fahrenbruch, A L; Bube, R H

An extended investigation has been made of the electrical and photovoltaic properties of heterojunctions prepared by spray-pyrolysis deposition of thin ZnO films on single-crystal p-type CdTe. The principal experimental variables were the substrate temperature and the postdeposition temperature for annealing in H/sub 2/. Under actual sunlight the optimum cell showed an open-circuit voltage of 0.54 V, a short-circuit current of 19.5 mA/cm/sup 2/, and a solar efficiency (referred to the active area) of 8.8%, the highest value obtained to date for an authentic heterojunction on CdTe. The nature of the forward transport mechanism has been investigated, and a tunneling model in which bulk and interface deep traps control the forward characteristics is shown to provide good correlation with the experimental data.

• Research Organization: Department of Materials Science and Engineering, Stanford University, Stanford, California 94305
• OSTI ID: 5220557
• Journal Information: J. Appl. Phys.; (United States), Journal Name: J. Appl. Phys.; (United States) Vol. 51:8; ISSN JAPIA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360603* -- Materials-- Properties
ANNEALING
CADMIUM COMPOUNDS
CADMIUM TELLURIDES
CHALCOGENIDES
CHEMICAL REACTIONS
CRYSTALS
DATA
DECOMPOSITION
DEPOSITION
DIRECT ENERGY CONVERTERS
EFFICIENCY
ELECTRICAL PROPERTIES
EQUIPMENT
FABRICATION
FILMS
HEAT TREATMENTS
INFORMATION
JUNCTIONS
MATERIALS
MATHEMATICAL MODELS
MONOCRYSTALS
OXIDES
OXYGEN COMPOUNDS
P-TYPE CONDUCTORS
PHOTOELECTRIC CELLS
PHOTOVOLTAIC CELLS
PHOTOVOLTAIC EFFECT
PHYSICAL PROPERTIES
PYROLYSIS
SEMICONDUCTOR MATERIALS
SOLAR CELLS
SOLAR EQUIPMENT
SPRAY COATING
SUBSTRATES
SURFACE COATING
TELLURIDES
TELLURIUM COMPOUNDS
TEMPERATURE DEPENDENCE
THERMOCHEMICAL PROCESSES
ZINC COMPOUNDS
ZINC OXIDES