三碘合錫(II)酸甲銨

三碘合錫(II)酸甲銨
英文名	Methylammonium tin triiodide; Methylamine triiodostannate(1-)
別名	MASnI3
識別
CAS號	67908-87-6
性質
化學式	CH3NH3SnI3
莫耳質量	531.488 g·mol⁻¹
外觀	黑色晶體
	若非註明，所有數據均出自標準狀態（25 ℃，100 kPa）下。

三碘合錫(II)酸甲銨是一種有機鈣鈦礦材料，化學式為CH₃NH₃SnI₃，它作為含鉛鈣鈦礦的替代品，在光電領域有著潛在應用。^[1]

製備

將碘化亞錫（或氧化亞錫^[2]）溶解在氮氣保護的氫碘酸和次磷酸混合溶液中並加熱，得到亮黃色溶液，向溶液中加入甲胺氫碘酸鹽固體，於120 °C蒸去一半溶劑，冷卻後析出黑色的MASnI₃晶體。該化合物在空氣中放置很快變質。^[3]碘化亞錫和甲胺氫碘酸鹽在2-丙醇中反應，也可以得到MASnI₃。^[4]

在MASnI₃的製備反應中，用DMF作為溶劑時，結晶速率要比同構物MAPbI₃要快。而在DMSO中的反應則會產生黃色的SnI₂·3DMSO中間體，該中間體與同族的PbI₂·2DMSO晶體結構不同。N-甲基吡咯烷酮和γ-丁內酯作為溶劑的反應也有研究。^[5]

性質

三碘合錫(II)酸甲銨的帶隙是1.15 eV，比多晶或薄膜的樣品要小，但在空氣中放置一個月後，帶隙升至1.46 eV，並伴隨著分子中的二價錫氧化為四價錫。

三碘合錫(II)酸甲銨加熱至200 °C分解，主要產生是碘化亞錫。^[2]

參考文獻

^ Aashir Waleed, Mohammad Mahdi Tavakoli, Leilei Gu, Ziyi Wang, Daquan Zhang, Arumugam Manikandan, Qianpeng Zhang, Rongjun Zhang, Yu-Lun Chueh, Zhiyong Fan. Lead-Free Perovskite Nanowire Array Photodetectors with Drastically Improved Stability in Nanoengineering Templates. Nano Letters. 2017-01-11, 17 (1): 523–530 [2019-01-12]. ISSN 1530-6984. doi:10.1021/acs.nanolett.6b04587.
^ ^2.0 ^2.1 Yangyang Dang, Yian Zhou, Xiaolong Liu, Dianxing Ju, Shengqing Xia, Haibing Xia, Xutang Tao. Formation of Hybrid Perovskite Tin Iodide Single Crystals by Top-Seeded Solution Growth. Angewandte Chemie International Edition. 2016, 55 (10): 3447–3450 [2019-01-12]. ISSN 1521-3773. doi:10.1002/anie.201511792 （英語）.
^ Constantinos C. Stoumpos, Christos D. Malliakas, Mercouri G. Kanatzidis. Semiconducting Tin and Lead Iodide Perovskites with Organic Cations: Phase Transitions, High Mobilities, and Near-Infrared Photoluminescent Properties. Inorganic Chemistry. 2013-08-05, 52 (15): 9019–9038 [2019-01-12]. ISSN 0020-1669. doi:10.1021/ic401215x. (Supporting Information (PDF) （頁面存檔備份，存於網際網路檔案館）)
^ Kangning Liang, David B. Mitzi, Michael T. Prikas. Synthesis and Characterization of Organic−Inorganic Perovskite Thin Films Prepared Using a Versatile Two-Step Dipping Technique. Chemistry of Materials. 1998-01-19, 10 (1): 403–411 [2019-01-12]. ISSN 0897-4756. doi:10.1021/cm970568f.
^ Feng Hao, Constantinos C. Stoumpos, Peijun Guo, Nanjia Zhou, Tobin J. Marks, Robert P. H. Chang, Mercouri G. Kanatzidis. Solvent-Mediated Crystallization of CH3NH3SnI3 Films for Heterojunction Depleted Perovskite Solar Cells. Journal of the American Chemical Society. 2015-09-09, 137 (35): 11445–11452 [2019-01-12]. ISSN 0002-7863. doi:10.1021/jacs.5b06658.

[1] Aashir Waleed, Mohammad Mahdi Tavakoli, Leilei Gu, Ziyi Wang, Daquan Zhang, Arumugam Manikandan, Qianpeng Zhang, Rongjun Zhang, Yu-Lun Chueh, Zhiyong Fan. Lead-Free Perovskite Nanowire Array Photodetectors with Drastically Improved Stability in Nanoengineering Templates. Nano Letters. 2017-01-11, 17 (1): 523–530 [2019-01-12]. ISSN 1530-6984. doi:10.1021/acs.nanolett.6b04587.

[Dang-2] 2.0 ^2.1 Yangyang Dang, Yian Zhou, Xiaolong Liu, Dianxing Ju, Shengqing Xia, Haibing Xia, Xutang Tao. Formation of Hybrid Perovskite Tin Iodide Single Crystals by Top-Seeded Solution Growth. Angewandte Chemie International Edition. 2016, 55 (10): 3447–3450 [2019-01-12]. ISSN 1521-3773. doi:10.1002/anie.201511792 （英語）.

[3] Constantinos C. Stoumpos, Christos D. Malliakas, Mercouri G. Kanatzidis. Semiconducting Tin and Lead Iodide Perovskites with Organic Cations: Phase Transitions, High Mobilities, and Near-Infrared Photoluminescent Properties. Inorganic Chemistry. 2013-08-05, 52 (15): 9019–9038 [2019-01-12]. ISSN 0020-1669. doi:10.1021/ic401215x. (Supporting Information (PDF) （頁面存檔備份，存於網際網路檔案館）)

[4] Kangning Liang, David B. Mitzi, Michael T. Prikas. Synthesis and Characterization of Organic−Inorganic Perovskite Thin Films Prepared Using a Versatile Two-Step Dipping Technique. Chemistry of Materials. 1998-01-19, 10 (1): 403–411 [2019-01-12]. ISSN 0897-4756. doi:10.1021/cm970568f.

[5] Feng Hao, Constantinos C. Stoumpos, Peijun Guo, Nanjia Zhou, Tobin J. Marks, Robert P. H. Chang, Mercouri G. Kanatzidis. Solvent-Mediated Crystallization of CH3NH3SnI3 Films for Heterojunction Depleted Perovskite Solar Cells. Journal of the American Chemical Society. 2015-09-09, 137 (35): 11445–11452 [2019-01-12]. ISSN 0002-7863. doi:10.1021/jacs.5b06658.

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