Additional Thermal Cycling Tests on Solar Cell Panel Samples under Vacuum Conditions.

摘要

The continuation of a comparative deep thermal cycling test on eight solar cell panel samples is described. The first test included 2500 cycles under vacuum conditions. It was decided to continue the tests for another 1000 cycles on four previously tested and three new solar cell panels. For 1000 temperature cycles (hot phase - maximum temperature +70 C; cold phase - minimum temperature -180 C) three flexible and four rigid solar cell panels were tested simultaneously. At room temperature the samples were investigated at predetermined intervals for optical, electrical, and mechanical differences. A short description of the test facility (for further details, see final report DLR-IB 353-77/178N18563) and a discussion of the obtained test results is given.