有机-无机杂化钙钛矿自组装量子阱结构的能带调控和光电性能的研究

郑莹莹; 邓海涛; 万静; 李超荣

doi:10.7498/aps.60.067306

摘要

有机-无机杂化钙钛矿材料具有分子尺度上调节能带结构的特点,在光、电、磁等领域均表现出了优异的性能.通过简单的旋涂方法,成功的制备了具有不同无机层层数的杂化钙钛矿材料(C6H13NH3)2(CH3NH3)n-1PbnI3n+1 (简写为C6Pb

关键词:

Organic-inorganic hybrid perovskite materials have excellent performance in optical, electrical and magnetic properties. The energy-band structure of the hybrid materials can be tuned at the molecular level. In this paper, thin films of hybrid perovskite (C6H13NH3)2(CH3NH3)n-1PbnI3n+1 (n=1, 2, 3, n is the number of two-dimensional inorganic-sheet) have been successfully prepared by a simple spin-coating method. The effects of the inorganic-sheet number (n) on the crystal structure, bandgap energy, exciton binding energy, photoluminescent emission and photocondunctive performance of the hybrid materials have been investigated systematically. With the increasing of inorganic-sheet number, the exciton absorption peak shows an obvious red shift, the bandgap becomes narrow, and the exciton binding energy decreases. Further, the exciton is separated into holes and electrons easily due to the expansion of the exciton Bohr radius and, moreover, the carrier mobilities are increased due to the increasing of inorganic-layer thickness. Consequently, the photocondunctivity of the films is greatly enhanced.

Keywords:

作者及机构信息

1.
浙江理工大学理学院物理系,杭州 310018

基金项目: 浙江省教育厅科研基金(批准号:Y201019087)、浙江理工大学科研启动基金(批准号:0713676-Y)和先进纺织材料与制备技术教育部重点实验室(浙江理工大学)优秀青年人才培养基金(批准号:2010QN05)资助的课题.

Authors and contacts

1.
Department of Physics, Zhejiang Sci-Tech University, Hangzhou 310018, China

参考文献

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[11]	Pradeesh K, Yadav G S, Singh M, Prakash G V 2010 Mater. Chem. Phys. 124 44
[12]	Mitzi D B 1996 Chem. Mater. 8 791
[13]	Li Y Y, Zheng G L, Lin C K, Lin J 2008 Cryst. Growth Des. 8 1990
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[15]	Braun M, Tuffentsamme W, Wachtel H, Wolf H C 1999 Chem. Phys. Lett. 307 373
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[19]	Cheng Z Y, Lin J 2010 Cryst. Eng. Comm 12 2646
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[22]	Li C R, Cui M Y, Sun Q T, Dong W J, Zheng Y Y, Tsukamoto K, Tang W H 2010 J. Alloys Compound 504 498
[23]	Tanaka K, Takahashi T, Kondo T, Umebayashi T, Asai K, Ema K 2005 Phys. Rev. B 71 045312
[24]	Ema K, Inomata M, Kato Y, Kunugita H, Era M 2008 Phys. Rev. Lett. 100 257401

施引文献

[1]	Kojima A, Teshima K, Shirai Y, Miyasaka T 2009 J. Am. Chem. Soc. 131 6050
[2]	Mitzi D B, Dimitrakopoulos C D, Rosner J, Medeiros D R, Xu Z, Noyan C 2002 Adv. Mater. 14 1772
[3]	Shibuya K, Koshimizu M, Takeoka Y, Asai K 2002 Nucl.Instr. Meth. Phys.Res. B 194 207
[4]	Mitzi D B 2001 J. Chem. Soc., Dalton Trans. 1 1
[5]	Tanaka K, Kondo T 2003 Sci. Technol. Adv. Mater. 4 599
[6]	Pradeesh K, Baumberg J J, Prakash G V 2009 Appl. Phys. Lett. 95 033309
[7]	Kitazawa N, Watanabe Y 2010 J. Phys. Chem. Solids 71 797
[8]	Ding Z B, Wang Q, Wang K, Wang H, Chen T X, Zhang G Y,Yao S D 2007 Acta Phys. Sin. 56 2873(in Chinese)[丁志博、王琦、王坤、王欢、陈田祥、张国义、姚淑德 2007 物理学报 56 2873]
[9]	Zhu L H, Cai J F, Li X Y, Deng B, Liu B L 2010 Acta Phys. Sin. 59 4996(in Chinese)[朱丽虹、蔡加法、李晓莹、邓彪、刘宝林 2010 物理学报 59 4996]
[10]	Kagan C R, Mitzi D B, Dimitrakopoulos C D 1999 Science 286 945
[11]	Pradeesh K, Yadav G S, Singh M, Prakash G V 2010 Mater. Chem. Phys. 124 44
[12]	Mitzi D B 1996 Chem. Mater. 8 791
[13]	Li Y Y, Zheng G L, Lin C K, Lin J 2008 Cryst. Growth Des. 8 1990
[14]	Mercier N, Poiroux S, Riou A, Batail P 2004 Inorg. Chem. 43 8361
[15]	Braun M, Tuffentsamme W, Wachtel H, Wolf H C 1999 Chem. Phys. Lett. 307 373
[16]	Lemmerer A, Billing D G 2010 Cryst. Eng. Comm. 12 1290
[17]	Takeoka Y, Asai K, Rikukawa M, Sanui K 2001 Chem. Commun. 24 2592
[18]	Era M, Yoneda S, Sano T, Noto M 2003 Thin Solid Films 438 322
[19]	Cheng Z Y, Lin J 2010 Cryst. Eng. Comm 12 2646
[20]	Tabuchi Y, Asai K, Rikukawa M, Sanui K, Ishigure K 2000 J. Phys. Chem. Solids 61 837
[21]	Hartridge A, Krishna M G, Bhattacharya A K 1998 J. Phys. Chem. Solids 59 859
[22]	Li C R, Cui M Y, Sun Q T, Dong W J, Zheng Y Y, Tsukamoto K, Tang W H 2010 J. Alloys Compound 504 498
[23]	Tanaka K, Takahashi T, Kondo T, Umebayashi T, Asai K, Ema K 2005 Phys. Rev. B 71 045312
[24]	Ema K, Inomata M, Kato Y, Kunugita H, Era M 2008 Phys. Rev. Lett. 100 257401

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