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231225s2018 xx |||||o 00| ||eng c |
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|a 10.1002/adma.201705998
|2 doi
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|a pubmed24n0934.xml
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|a eng
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| 100 |
1 |
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|a Tavakoli, Mohammad Mahdi
|e verfasserin
|4 aut
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| 245 |
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|a Large-Grain Tin-Rich Perovskite Films for Efficient Solar Cells via Metal Alloying Technique
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| 264 |
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|c 2018
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| 336 |
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|a Text
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|a ƒaComputermedien
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|a Date Completed 01.08.2018
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|a Date Revised 30.09.2020
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a © 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
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|a Fast research progress on lead halide perovskite solar cells has been achieved in the past a few years. However, the presence of lead (Pb) in perovskite composition as a toxic element still remains a major issue for large-scale deployment. In this work, a novel and facile technique is presented to fabricate tin (Sn)-rich perovskite film using metal precursors and an alloying technique. Herein, the perovskite films are formed as a result of the reaction between Sn/Pb binary alloy metal precursors and methylammonium iodide (MAI) vapor in a chemical vapor deposition process carried out at 185 °C. It is found that in this approach the Pb/Sn precursors are first converted to (Pb/Sn)I2 and further reaction with MAI vapor leads to the formation of perovskite films. By using Pb-Sn eutectic alloy, perovskite films with large grain sizes up to 5 µm can be grown directly from liquid phase metal. Consequently, using an alloying technique and this unique growth mechanism, a less-toxic and efficient perovskite solar cell with a power conversion efficiency (PCE) of 14.04% is demonstrated, while pure Sn and Pb perovskite solar cells prepared in this manner yield PCEs of 4.62% and 14.21%, respectively. It is found that this alloying technique can open up a new direction to further explore different alloy systems (binary or ternary alloys) with even lower melting point
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|a Journal Article
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|a alloys
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|a chemical vapor deposition
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|a metal precursor
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|a perovskite
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4 |
|a solar cells
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|a Zakeeruddin, Shaik Mohammed
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Grätzel, Michael
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Fan, Zhiyong
|e verfasserin
|4 aut
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|g 30(2018), 11 vom: 24. März
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|u http://dx.doi.org/10.1002/adma.201705998
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