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Advanced Photovoltaic Experiment, S0014: Preliminary Flight Results and Post-Flight FindingsThe Advanced Photovoltaic Experiment (APEX) is an LDEF experiment designed to provide reference solar cell standards for laboratory measurements as well as to investigate the solar spectrum and the effects of long term exposure of solar cells to the LEO environment. Silicon and gallium arsenide solar cells were flown with the appropriate instrumentation to periodically measure cell performance and temperature. The experimental objectives, the design employed to realize these objectives and the solar cells and instrumentation selected for the flight are presented. A discussion of the flight data returned are included. Preliminary results from the post flight analysis of the absolute cavity radiometer, the digital solar angle sensor, and the Barr Associates narrow bandpass optical filters are also presented. The initial findings of work to determine the chemical nature of contamination layers on APEX are also presented.
Document ID
Document Type
Conference Paper
Brinker, David J.
(NASA Lewis Research Center Cleveland, OH., United States)
Hickey, John R.
(Eppley Lab., Inc., Newport RI., United States)
Brasted, Donald K.
(NASA Lewis Research Center Cleveland, OH, United States)
Date Acquired
September 6, 2013
Publication Date
June 1, 1991
Publication Information
Publication: NASA, Langley Research Center, First LDEF Post-Retrieval Symposium Abstracts
Subject Category
Energy Production And Conversion
Report/Patent Number
Accession Number
Distribution Limits
Work of the US Gov. Public Use Permitted.

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