Journal article
Radiative efficiency of lead iodide based perovskite solar cells
- Abstract:
- The maximum efficiency of any solar cell can be evaluated in terms of its corresponding ability to emit light. We herein determine the important figure of merit of radiative efficiency for Methylammonium Lead Iodide perovskite solar cells and, to put in context, relate it to an organic photovoltaic (OPV) model device. We evaluate the reciprocity relation between electroluminescence and photovoltaic quantum efficiency and conclude that the emission from the perovskite devices is dominated by a sharp band-to-band transition that has a radiative efficiency much higher than that of an average OPV device. As a consequence, the perovskite have the benefit of retaining an open circuit voltage ~0.14 V closer to its radiative limit than the OPV cell. Additionally, and in contrast to OPVs, we show that the photoluminescence of the perovskite solar cell is substantially quenched under short circuit conditions in accordance with how an ideal photovoltaic cell should operate.
- Publication status:
- Published
- Peer review status:
- Peer reviewed
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(Preview, Version of record, pdf, 945.3KB, Terms of use)
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- Publisher copy:
- 10.1038/srep06071
Authors
- Publisher:
- Springer Nature
- Journal:
- Scientific Reports More from this journal
- Volume:
- 4
- Article number:
- 6071
- Publication date:
- 2014-08-14
- Acceptance date:
- 2014-07-28
- DOI:
- EISSN:
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2045-2322
- Language:
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English
- Keywords:
- UUID:
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uuid:d11cb3cb-f9c0-4d60-8407-980592508f6a
- Local pid:
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pubs:483022
- Source identifiers:
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483022
- Deposit date:
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2014-09-18
Terms of use
- Copyright holder:
- Tvingstedt, K et al
- Copyright date:
- 2014
- Notes:
- © 2014 Tvingstedt, K et al. This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International License. The images or other third party material in this article are included in the article's Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder in order to reproduce the material.
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