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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Desai, D. Hegedus, S. McCandless, B. Birkmire, R. Dobson, K. Ryan, D. |
| Copyright Year | 2006 |
| Description | Author affiliation: Inst. of Energy Conversion, Delaware Univ., Newark, DE (Desai, D.; Hegedus, S.; McCandless, B.; Birkmire, R.; Dobson, K.; Ryan, D.) |
| Abstract | The fundamental mechanisms governing carrier transport and in CdTe solar cells are not well established. Effects of diffusion length (L), depletion width (W), primary heterojunction vs. back junction are not well correlated with the CdTe thickness (t), or back contact. Bifacial analysis provides quantitative insight into CdTe device operation by separating the effects of front and back junction. Back spectral response $(SR_{B})$ was analyzed to evaluate L and W. Front spectral response $(SR_{F})$ is nearly unaffected by L or W. SR $_{B}$ and back $J_{sc}$ are higher for thinner cells as SR $_{B}$ is limited by diffusion across the field free region that is smaller for thinner cells. Bifacial characterization results indicate a photosensitive back barrier. There is no evidence of a back junction and we conclude that a single junction determines recombination current. These results establish that performance for AM1.5 light through front contact is determined primarily by voltage dependent collection, not diffusion length |
| Sponsorship | IEEE Electron Devices Soc |
| Starting Page | 368 |
| Ending Page | 371 |
| File Size | 323103 |
| Page Count | 4 |
| File Format | |
| ISBN | 1424400163 |
| DOI | 10.1109/WCPEC.2006.279466 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2006-05-07 |
| Publisher Place | USA |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Photovoltaic cells Lighting Photoconductivity Surface treatment Voltage Charge carrier density Glass Strontium Energy conversion Heterojunctions |
| Content Type | Text |
| Resource Type | Article |
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