三碘合錫(II)酸甲銨
化合物
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,在光電領域有着潛在應用。[1]
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 |
摩爾質量 | 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。 |
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,並伴隨着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,存於互聯網檔案館))
- ^ 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.