Title :
14.6% efficient thin-film cadmium telluride heterojunction solar cells
Author :
Chu, T.L. ; Chu, Shirley S. ; Britt, J. ; Ferekides, C. ; Wang, C. ; Wu, C.Q. ; Ullal, H.S.
Author_Institution :
Dept. of Electr. Eng., Univ. of South Florida, Tampa, FL, USA
fDate :
5/1/1992 12:00:00 AM
Abstract :
Thin-film CdS/CdTe heterojunction solar cells have been prepared by the successive deposition of thin films of fluorine-doped SnO/sub 2/, CdS, p-CdTe, and an ohmic contact on glass substrates, followed by the deposition of an antireflection coating. The properties of CdS/CdTe heterojunctions have been studied. Under global AM1.5 conditions, a solar cell of about 1 cm/sup 2/ area has an open-circuit voltage of 805+or-5 mV, a short-circuit current density of 24.4+or-0.3 mA/cm/sup 2/, and a fill factor of 70.5+or-0.5%, corresponding to a total area conversion efficiency of 14.6+or-0.3%, verified by the National Renewable Energy Laboratory.<>
Keywords :
II-VI semiconductors; cadmium compounds; semiconductor thin films; short-circuit currents; solar cells; 14.6 percent; 805 mV; CdTe-CdS-SnO/sub 2/:F; antireflection coating; fill factor; glass substrates; global AM1.5 conditions; ohmic contact; open-circuit voltage; short-circuit current density; thin film heterojunction solar cells; total area conversion efficiency; Cadmium compounds; Coatings; Glass; Heterojunctions; Ohmic contacts; Photovoltaic cells; Sputtering; Substrates; Transistors; Voltage;
Journal_Title :
Electron Device Letters, IEEE
