We investigate the thermally induced morphological and crystalline development of methylammonium lead mixed halide perovskite (CH 3NH3PbI3-xClx) thin films and photovoltaic device performance with meso-superstructured and planar heterojunction architectures. We observe that a short rapid thermal annealing at 130 °C leads to the growth of large micron-sized textured perovskite domains and improved the short circuit currents and power conversion efficiencies up to 13.5% for the planar heterojunction perovskite solar cells. This work highlights the criticality of controlling the thin film crystallization mechanism of hybrid perovskite materials for high-performing photovoltaic applications. © 2014 American Chemical Society.
|Original language||English (US)|
|Number of pages||7|
|Journal||The Journal of Physical Chemistry C|
|State||Published - Apr 11 2014|
Bibliographical noteKAUST Repository Item: Exported on 2020-10-01
Acknowledged KAUST grant number(s): KUS-C1-018-02
Acknowledgements: The authors acknowledge financial support from the National Science Foundation (NSF) through the Materials World Network grant between the US (DMR-1008125) and the UK (Engineering and Physical Sciences Research Council, EPSRC). K.W.T. gratefully acknowledges the Singapore Energy Innovation Programme Office for a National Research Foundation graduate fellowship. This work made use of the research facilities of the Cornell Center for Materials Research (CCMR) with support from the NSF Materials Research Science and Engineering Centers (MRSEC) program (DMR-1120296), Cornell High Energy Synchrotron Source (CHESS) which is supported by the NSF and the NIH/National Institute of General Medical Sciences under NSF Award DMR-0936384, and the KAUST-Cornell Center for Energy and Sustainability supported by Award KUS-C1-018-02, made by King Abdullah University of Science and Technology (KAUST). The authors acknowledge A. Abate and S. Stranks of University of Oxford and D. M. Smilgies, M. Koker and R. Li of Cornell University for helpful discussion and kind experimental assistance.
This publication acknowledges KAUST support, but has no KAUST affiliated authors.