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Effect of chemical surface treatments on non-native (Bi/sub 2/O/sub 3/) GaAs metal-insulator-semiconductor solar cells

Journal Article · · J. Appl. Phys.; (United States)
DOI:https://doi.org/10.1063/1.329323· OSTI ID:6377237
GaAs metal-insulator-semiconductor solar cells with a physically deposited Bi/sub 2/O/sub 3/ interfacial layer have been investigated. The deposition techniques used in the study were electron beam and boat thermal evaporation. The cells fabricated with interfacial layers of Bi/sub 2/O/sub 3/ showed a substantial improvement in open-circuit voltage over cells made without the physically deposited oxide layer. An etch has been used which yields an irregular ''textured'' surface. Cells employing this surface had a higher short-circuit current than those made with smooth, polished surfaces. The open-circuit voltages of these textured cells were lower than those with smooth surfaces. Calculations of the dependence of open-circuit voltage on pinhole density are in agreement with these results since a rough surface has a greater probability of pinholes.
Research Organization:
Department of Electrical and Computer Engineering, Arizona State University, Tempe, Arizona 85281
OSTI ID:
6377237
Journal Information:
J. Appl. Phys.; (United States), Journal Name: J. Appl. Phys.; (United States) Vol. 52:7; ISSN JAPIA
Country of Publication:
United States
Language:
English