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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Ouedraogo, S. Sam, R. Ouedraogo, F. Kebre, M.B. Zougmore, F. Ndjaka, J.-M. Ouedraogo, S. |
| Copyright Year | 2013 |
| Description | Author affiliation: Lab. de Mater. et Environ., Univ. de Ouagadougou, Ouagadougou, Burkina Faso (Ouedraogo, S.; Sam, R.; Ouedraogo, F.; Kebre, M.B.; Zougmore, F.) || Dept. de Phys., Univ. de Yaounde I, Yaoundé, Cameroon (Ndjaka, J.-M.; Ouedraogo, S.) |
| Abstract | We performed modeling and simulation of Cu(In, $Ga)Se_{2}$ (CIGS) thin film solar cell, using SCAPS-1D device simulator, and we especially investigated the influence of absorber back surface region grading. The band-gap in the back surface region, as well as the thickness of the back surface grading layer, were varied to achieve the optimal performances. Based on these results, an optimal back-grading structure for Cu(In, $Ga)Se_{2}$ solar cell is proposed. It is shown that, the short-circuit current density $(J_{sc})$ improves with increasing the absorber band-gap in the back surface region. Very high $J_{sc}$ of 32.72 $mA/cm^{2}$ was obtained, when the band-gap of the absorber near the back contact is 0.2 to 0.5 higher than the absorber bulk band-gap. The Open-circuit Voltage $(V_{oc}),$ the fill factor (FF) and the efficiency (η) of the solar cell decrease for high band-gap near the back contact. The efficiency and the fill factor obtained for our model are respectively 16% and 75%. A comparison with published data for the Cu(In, $Ga)Se_{2}$ cells shows an excellent agreement. |
| Sponsorship | IEEE Mauritius Subsect. |
| Starting Page | 1 |
| Ending Page | 6 |
| File Size | 374742 |
| Page Count | 6 |
| File Format | |
| ISBN | 9781467359405 |
| ISSN | 21530033 |
| e-ISBN | 9781467359436 |
| DOI | 10.1109/AFRCON.2013.6757813 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2013-09-09 |
| Publisher Place | Mauritius |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Photovoltaic cells Photonic band gap Materials Performance evaluation Short-circuit currents Charge carrier processes Mathematical model back-grading Cu(In Ga)Se |
| Content Type | Text |
| Resource Type | Article |
| Subject | Electrical and Electronic Engineering Computer Science Applications |
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