Abstract
Prismatic cover experiments were performed on GaInP/Ga(In)As/Ge triple-junction concentrator solar cells having grid designs with up to 39% metal coverage. The devices were characterized both before and after the application of optically-clear silicone covers patterned with cylindrical-lens microstructures. In solar-simulator LIV measurements at 1 sun and at 500 suns, we observed a boost in the efficiency of prism-covered cells, relative to before covering, of up to 34%, depending on the grid coverage fraction. The spectral response of the cells before and after covering was also characterized, and the observed boost in external quantum efficiency was found to be consistent with the LIV performance gains. Also studied were the lateral tolerances allowed by the prismatic covers, for alignment to the underlying cell grid structure, as a function of the maximum angle of incidence of the light impinging onto the cell. Ray-tracing simulations were performed, and found to be consistent with preliminary angular-dependence spectral response measurements done under monochromatic illumination.
| Original language | English (US) |
|---|---|
| Title of host publication | Conference Record of the IEEE Photovoltaic Specialists Conference |
| Pages | 131-136 |
| Number of pages | 6 |
| DOIs | |
| State | Published - 2009 |
| Externally published | Yes |
| Event | 2009 34th IEEE Photovoltaic Specialists Conference, PVSC 2009 - Philadelphia, PA, United States Duration: Jun 7 2009 → Jun 12 2009 |
Other
| Other | 2009 34th IEEE Photovoltaic Specialists Conference, PVSC 2009 |
|---|---|
| Country | United States |
| City | Philadelphia, PA |
| Period | 6/7/09 → 6/12/09 |
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ASJC Scopus subject areas
- Electrical and Electronic Engineering
- Control and Systems Engineering
- Industrial and Manufacturing Engineering
Cite this
Prismatic covers for boosting the efficiency of high-concentration PV systems. / Boca, Andreea; Edmondson, Kenneth M.; King, Richard.
Conference Record of the IEEE Photovoltaic Specialists Conference. 2009. p. 131-136 5411714.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Prismatic covers for boosting the efficiency of high-concentration PV systems
AU - Boca, Andreea
AU - Edmondson, Kenneth M.
AU - King, Richard
PY - 2009
Y1 - 2009
N2 - Prismatic cover experiments were performed on GaInP/Ga(In)As/Ge triple-junction concentrator solar cells having grid designs with up to 39% metal coverage. The devices were characterized both before and after the application of optically-clear silicone covers patterned with cylindrical-lens microstructures. In solar-simulator LIV measurements at 1 sun and at 500 suns, we observed a boost in the efficiency of prism-covered cells, relative to before covering, of up to 34%, depending on the grid coverage fraction. The spectral response of the cells before and after covering was also characterized, and the observed boost in external quantum efficiency was found to be consistent with the LIV performance gains. Also studied were the lateral tolerances allowed by the prismatic covers, for alignment to the underlying cell grid structure, as a function of the maximum angle of incidence of the light impinging onto the cell. Ray-tracing simulations were performed, and found to be consistent with preliminary angular-dependence spectral response measurements done under monochromatic illumination.
AB - Prismatic cover experiments were performed on GaInP/Ga(In)As/Ge triple-junction concentrator solar cells having grid designs with up to 39% metal coverage. The devices were characterized both before and after the application of optically-clear silicone covers patterned with cylindrical-lens microstructures. In solar-simulator LIV measurements at 1 sun and at 500 suns, we observed a boost in the efficiency of prism-covered cells, relative to before covering, of up to 34%, depending on the grid coverage fraction. The spectral response of the cells before and after covering was also characterized, and the observed boost in external quantum efficiency was found to be consistent with the LIV performance gains. Also studied were the lateral tolerances allowed by the prismatic covers, for alignment to the underlying cell grid structure, as a function of the maximum angle of incidence of the light impinging onto the cell. Ray-tracing simulations were performed, and found to be consistent with preliminary angular-dependence spectral response measurements done under monochromatic illumination.
UR - http://www.scopus.com/inward/record.url?scp=77951615488&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=77951615488&partnerID=8YFLogxK
U2 - 10.1109/PVSC.2009.5411714
DO - 10.1109/PVSC.2009.5411714
M3 - Conference contribution
AN - SCOPUS:77951615488
SN - 9781424429509
SP - 131
EP - 136
BT - Conference Record of the IEEE Photovoltaic Specialists Conference
ER -