1. L. PARTAIN and M. SAYED, ?Optical Solar Array Design and Accelerated Life Tests of CdS-Cu2S Solar Cells,? International Electron Devices Meeting Technical Digest, Washington, DC (1973) p. 434?37.
2. N. NAKAYAMA, A. GYOBU and N. MORIMOTO,Jpn. J. Appl. Phys. 10 (1971) 1415.
3. W. R. COOK Jr, L. SHIOZAWA and F. AUGUSTINE,J. Appl. Phys. 41 (1970) 3058.
4. A. W. CZANDERNA, E. T. PRINCE and H. F. HELBIG,Proc. Soc. Photo-Opt. Instrum. Eng. 248 (1980) 74.
5. A. L. FAHRENBRUCH and R. H. BUTE,J. Appl. Phys. 45 (1974) 1264.