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Solar cell short circuit current errors and uncertainties during high altitude calibrations
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Snyder, David D. |
| Copyright Year | 2012 |
| Description | High altitude balloon based facilities can make solar cell calibration measurements above 99.5% of the atmosphere to use for adjusting laboratory solar simulators. While close to on-orbit illumination, the small attenuation to the spectra may result in under measurements of solar cell parameters. Variations of stratospheric weather, may produce flight-to-flight measurement variations. To support the NSCAP effort, this work quantifies some of the effects on solar cell short circuit current (Isc) measurements on triple junction sub-cells. This work looks at several types of high altitude methods, direct high altitude meas urements near 120 kft, and lower stratospheric Langley plots from aircraft. It also looks at Langley extrapolation from altitudes above most of the ozone, for potential small balloon payloads. A convolution of the sub-cell spectral response with the standard solar spectrum modified by several absorption processes is used to determine the relative change from AMO, lscllsc(AMO). Rayleigh scattering, molecular scatterin g from uniformly mixed gases, Ozone, and water vapor, are included in this analysis. A range of atmosph eric pressures are examined, from 0. 05 to 0.25 Atm to cover the range of atmospheric altitudes where solar cell calibrations a reperformed. Generally these errors and uncertainties are less than 0.2% |
| File Size | 3081471 |
| Page Count | 6 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_20150009917 |
| Archival Resource Key | ark:/13960/t7qp14874 |
| Language | English |
| Publisher Date | 2012-06-03 |
| Access Restriction | Open |
| Subject Keyword | Energy Production And Conversion Solar Cells Short Circuit Currents Calibrating High Altitude Balloons Total Ozone Mapping Spectrometer Stratosphere Ozone Air Masses Solar Simulators Asynchronous Transfer Mode Gas Mixtures Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
