Binek, A., Grill, I., Huber, N., Peters, K., Hufnagel, A. G., Handloser, M., Docampo, P. , Hartschuh, A. and Bein, T. (2016) Control of perovskite crystal growth by methylammonium lead chloride templating. Chemistry: An Asian Journal, 11(8), pp. 1199-1204. (doi: 10.1002/asia.201501379) (PMID:26928877)
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Abstract
State‐of‐the‐art solar cells based on methylammonium lead iodide (MAPbI3) now reach efficiencies over 20 %. This fast improvement was possible with intensive research in perovskite processing. In particular, chloride‐based precursors are known to have a positive influence on the crystallization of the perovskite. Here, we used a combination of in‐situ X‐ray diffraction and charge‐transport measurements to understand the influence of chloride during perovskite crystallization in planar heterojunction solar cells. We show that MAPbCl3 crystallizes directly after the deposition of the starting solution and acts as a template for the formation of MAPbI3. Additionally, we show that the charge‐carrier mobility doubles by extending the time for the template formation. Our results give a deeper understanding of the influence of chloride in the synthesis of MAPbI3 and illustrate the importance of carefully controlling crystallization for reproducible, high‐efficiency solar cells.
| Item Type: | Articles |
|---|---|
| Additional Information: | The authors wish to thank Steffen Schmidt from the Department of Chemistry at the University of Munich (LMU) for the focused ion beam cross‐sections. We acknowledge funding from the Bavarian State Ministry of the Environment and Consumer Protection, the Bavarian network “Solar Technologies Go Hybrid”, and the DFG Excellence Cluster Nanosystems Initiative Munich (NIM). We gratefully acknowledge support from the European Union through the award of a Marie Curie Intra‐European Fellowship. The authors acknowledge funding from the German Federal Ministry of Education and Research (BMBF) under the agreement number 01162525/1. Special Issue: Energy Storage and Conversion |
| Status: | Published |
| Refereed: | Yes |
| Glasgow Author(s) Enlighten ID: | Docampo, Dr Pablo |
| Authors: | Binek, A., Grill, I., Huber, N., Peters, K., Hufnagel, A. G., Handloser, M., Docampo, P., Hartschuh, A., and Bein, T. |
| College/School: | College of Science and Engineering > School of Chemistry |
| Journal Name: | Chemistry: An Asian Journal |
| Publisher: | Wiley |
| ISSN: | 1861-4728 |
| ISSN (Online): | 1861-471X |
| Published Online: | 01 March 2016 |
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