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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Kim, D.S. Meemongkolkiat, V. Ebong, A. Rounsaville, B. Upadhyaya, V. Das, A. Rohatgi, A. |
| Copyright Year | 2006 |
| Description | Author affiliation: Sch. of Electr. & Comput. Eng., Univ. Center of Excellence for Photovoltaics Res. & Educ., Atlanta, GA (Kim, D.S.; Meemongkolkiat, V.; Ebong, A.; Rounsaville, B.; Upadhyaya, V.; Das, A.; Rohatgi, A.) |
| Abstract | Two-dimensional numerical simulations were performed to derive design rules for low-cost, high-efficiency interdigitated back contact (IBC) solar cells on a low-cost substrate. The IBC solar cells were designed to be fabricated using either the conventional screen printing or photolithography metallization processes. Bulk lifetime, bulk resistivity, contact spacing (pitch), contact opening width, recombination in the gap between the $p^{+}$ BSF and $n^{+}$ emitter, and the ratio of emitter width to pitch have been used as key variables in the simulations. It is found that short circuit current density $(J_{sc})$ is not only a strong function of the bulk lifetime but also the emitter coverage of the rear surface. Fill factor (FF) decreases as the emitter coverage increases because the majority carriers need to travel a longer distance through the substrate for longer emitter width. The simulated IBC results were compared with those for conventional screen printed solar cells. It was found that the IBC solar cell outperforms the screen printed (SP) solar cell when the bulk lifetime is above 50 mus due to higher $V_{oc}$ and Jsc , which suggests that higher performance can be realized on low-cost substrates with the IBC structure |
| Sponsorship | IEEE Electron Devices Soc |
| Starting Page | 1417 |
| Ending Page | 1420 |
| File Size | 353667 |
| Page Count | 4 |
| File Format | |
| ISBN | 1424400163 |
| DOI | 10.1109/WCPEC.2006.279718 |
| 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 Contacts Numerical simulation Sun Silicon Modeling Design engineering Metallization Circuit simulation Short circuit currents |
| Content Type | Text |
| Resource Type | Article |
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