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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Jian Wu Xusheng Wang Lingjun Zhang |
| Copyright Year | 2013 |
| Description | Author affiliation: Canadian Solar Inc., Suzhou, China (Jian Wu; Xusheng Wang; Lingjun Zhang) |
| Abstract | Silicon based chalcopyrite (with the compounds composition $I(B)-III(A)-VI(A)_{2})$ hetero-j unction solar cells have been reported with the potential of high conversion efficiency theoretically. The hetero-j unction solar cell with $PNN^{+}$ structure is fabricated as: front metal electrodes/ transparent conduction oxide (TCO)/ p-type chalcopyrite layer emitter/ n-type silicon base/ $n^{+}$ silicon back surface doping/ rear metal electrodes. By inserting artificially one thin order defect compound (ODC) layers with a high bulk density of states, and one thin interface layer to represent the total interface states between the chalcopyrite and silicon, the impacts of the interface defects on $PNN^{+}$ hetero-j unction solar cells were studied by the means of numerical analysis with AMPS-1D simulation. Our results indicate that band bending, determined by band offset at the ODC/c-Si hetero-interface, could be critical to cell performance. The optimum electron affinity of ODC layer is 4.4eV The total volumetric density of states $(N_{DB})$ in ODC layer should be controlled lower than $1×10^{18}$ $cm^{3},$ and the density of ODC/c-Si interface state $(D_{it})$ should be lower than $1×10^{3}$ $cm^{-2},$ to obtain the best cell performance. |
| Sponsorship | IEEE Electron Devices Soc. |
| Starting Page | 1092 |
| Ending Page | 1097 |
| File Size | 496015 |
| Page Count | 6 |
| File Format | |
| DOI | 10.1109/PVSC.2013.6744331 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2013-06-16 |
| Publisher Place | USA |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Silicon Photovoltaic cells Interface states Photonic band gap Spontaneous emission Compounds Doping silicon solar cell hetero-junction chalcopyrite |
| Content Type | Text |
| Resource Type | Article |
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