Abstract
This conference paper describes Consensus standards for determining the efficiency of a concentrator cell or module that have not been developed. NREL, Sandia National Laboratory, the Fraunhofer Institute for Solar Energy in Germany, and the Progress in Photovoltaics Efficiency Table authors have informally agreed upon concentrator-cell reference conditions. These conditions are 25?C celltemperature, 1-sun =1000 W/m2 total irradiance, and the ASTM E891-87 direct-normal reference spectrum. Deficiencies in the direct reference spectrum are discussed, and a more representative reference spectrum for evaluating concentrator cells is proposed. The spectrum was generated by the SMARTS model, and the atmospheric parameters are as close as possible to the existing direct spectrum, withthe exception that the aerosol optical depth at 500 nm is reduced from 0.27 to 0.085.
Original language | American English |
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Number of pages | 7 |
State | Published - 2002 |
Event | 29th IEEE PV Specialists Conference - New Orleans, Louisiana Duration: 20 May 2002 → 24 May 2002 |
Conference
Conference | 29th IEEE PV Specialists Conference |
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City | New Orleans, Louisiana |
Period | 20/05/02 → 24/05/02 |
Bibliographical note
Prepared for the 29th IEEE PV Specialists Conference, 20-24 May 2002, New Orleans, LouisianaNREL Publication Number
- NREL/CP-520-31405
Keywords
- aerosol optical depth
- cell temperature
- concentrator cells
- direct-beam reference spectrum
- global reference spectrum
- module
- multijunction devices
- one-sun irradiance
- PV
- short circuit current (ISC)