Article ; Online: Establishing the limits of efficiency of perovskite solar cells from first principles modeling.
2016 Volume 6, Page(s) 36108
Abstract: The recent surge in research on metal-halide-perovskite solar cells has led to a seven-fold ... chemical space with the perovskite structure. Here, using first-principles calculations and thermodynamic ... of the solar cell as a whole. Our results provide a useful framework for experimental searches toward more efficient ...
| Abstract | The recent surge in research on metal-halide-perovskite solar cells has led to a seven-fold increase of efficiency, from ~3% in early devices to over 22% in research prototypes. Oft-cited reasons for this increase are: (i) a carrier diffusion length reaching hundreds of microns; (ii) a low exciton binding energy; and (iii) a high optical absorption coefficient. These hybrid organic-inorganic materials span a large chemical space with the perovskite structure. Here, using first-principles calculations and thermodynamic modelling, we establish that, given the range of band-gaps of the metal-halide-perovskites, the theoretical maximum efficiency limit is in the range of ~25-27%. Our conclusions are based on the effect of level alignment between the perovskite absorber layer and carrier-transporting materials on the performance of the solar cell as a whole. Our results provide a useful framework for experimental searches toward more efficient devices. |
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| Language | English |
| Publishing date | 2016-11-08 |
| Publishing country | England |
| Document type | Journal Article ; Research Support, U.S. Gov't, Non-P.H.S. ; Research Support, Non-U.S. Gov't |
| ZDB-ID | 2615211-3 |
| ISSN | 2045-2322 ; 2045-2322 |
| ISSN (online) | 2045-2322 |
| ISSN | 2045-2322 |
| DOI | 10.1038/srep36108 |
| Database | MEDical Literature Analysis and Retrieval System OnLINE |
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