Atomically thin two-dimensional organic-inorganic hybrid perovskites

被引：1188

作者：

Dou, Letian ^{[1
,2
]}

Wong, Andrew B. ^{[1
,2
]}

Yu, Yi ^{[1
,2
,3
]}

Lai, Minliang ^{[1
]}

Kornienko, Nikolay ^{[1
,2
]}

Eaton, Samuel W. ^{[1
]}

Fu, Anthony ^{[1
,2
]}

Bischak, Connor G. ^{[1
]}

Ma, Jie ^{[1
,2
]}

Ding, Tina ^{[1
,2
]}

Ginsberg, Naomi S. ^{[1
,2
,4
,5
,6
]}

Wang, Lin-Wang ^{[2
]}

Alivisatos, A. Paul ^{[1
,2
,5
,7
]}

Yang, Peidong ^{[1
,2
,5
,7
]}

机构：

[1] Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA

[2] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Mat Sci, Berkeley, CA 94720 USA

[3] ShanghaiTech Univ, Sch Phys Sci & Technol, Shanghai 201210, Peoples R China

[4] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA

[5] Kavli Energy NanoSci Inst, Berkeley, CA 94720 USA

[6] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Phys Biosci Div, Berkeley, CA 94720 USA

[7] Univ Calif Berkeley, Dept Mat Sci & Engn, Berkeley, CA 94720 USA

来源：

SCIENCE | 2015年 / 349卷 / 6255期

关键词：

REDUCED BAND-GAP; TRANSITION; EMISSION; HYDROGEN; PHASE;

D O I：

10.1126/science.aac7660

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Organic-inorganic hybrid perovskites, which have proved to be promising semiconductor materials for photovoltaic applications, have been made into atomically thin two-dimensional (2D) sheets. We report the solution-phase growth of single-and few-unit-cell-thick single-crystalline 2D hybrid perovskites of (C4H9NH3)(2)PbBr4 with well-defined square shape and large size. In contrast to other 2D materials, the hybrid perovskite sheets exhibit an unusual structural relaxation, and this structural change leads to a band gap shift as compared to the bulk crystal. The high-quality 2D crystals exhibit efficient photoluminescence, and color tuning could be achieved by changing sheet thickness as well as composition via the synthesis of related materials.

引用

页码：1518 / 1521

页数：4

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