| Title | Controllable Growth of Aligned Monocrystalline CsPbB3 Microwire Arrays for Piezoelectric-Induced Dynamic Modulation of Single-Mode Lasing |
| Authors | Yang, Zheng Lu, Junfeng ZhuGe, Minghua Cheng, Yang Hu, Jufang Li, Fangtao Qiao, Shuang Zhang, Yufei Hu, Guofeng Yang, Qing Peng, Dengfeng Liu, Kaihui Pan, Caofeng |
| Affiliation | Chinese Acad Sci, Beijing Inst Nanoenergy & Nanosyst, Beijing Key Lab Micronano Energy & Sensor, CAS Ctr Excellence Nanosci, Beijing 100083, Peoples R China Univ Chinese Acad Sci, Sch Nanosci & Technol, Beijing 100049, Peoples R China Zhejiang Univ, Coll Opt Sci & Engn, State Key Lab Modern Opt Instrumentat, Hangzhou 310027, Zhejiang, Peoples R China Peking Univ, Collaborat Innovat Ctr Quantum Matter, State Key Lab Mesoscop Phys, Sch Phys, Beijing 100871, Peoples R China Shenzhen Univ, Coll Optoelect Engn, Shenzhen 518060, Peoples R China Guangxi Univ, Sch Phys Sci & Technol, Ctr Nanoenergy Res, Nanning 530004, Guangxi, Peoples R China |
| Keywords | arrays CsPbBr3 mode shift piezoelectric single-mode lasers |
| Issue Date | 2019 |
| Publisher | ADVANCED MATERIALS |
| Abstract | CsPbBr3 shows great potential in laser applications due to its superior optoelectronic characteristics. The growth of CsPbBr3 wire arrays with well-controlled sizes and locations is beneficial for cost-effective and largely scalable integration into on-chip devices. Besides, dynamic modulation of perovskite lasers is vital for practical applications. Here, monocrystalline CsPbBr3 microwire (MW) arrays with tunable widths, lengths, and locations are successfully synthesized. These MWs could serve as high-quality whispering-gallery-mode lasers with high quality factors (>1500), low thresholds (<3 mu J cm(-2)), and long stability (>2 h). An increase of the width results in an increase of the laser quality and the resonant mode number. The dynamic modulation of lasing modes is achieved by a piezoelectric polarization-induced refractive index change. Single-mode lasing can be obtained by applying strain to CsPbBr3 MWs with widths between 2.3 and 3.5 mu m, and the mode positions can be modulated dynamically up to approximate to 9 nm by changing the applied strain. Piezoelectric-induced dynamic modulation of single-mode lasing is convenient and repeatable. This method opens new horizons in understanding and utilizing the piezoelectric properties of lead halide perovskites in lasing applications and shows potential in other applications, such as on-chip strain sensing. |
| URI | http://hdl.handle.net/20.500.11897/548416 |
| ISSN | 0935-9648 |
| DOI | 10.1002/adma.201900647 |
| Indexed | SCI(E) EI |
| Appears in Collections: | 物理学院 人工微结构和介观物理国家重点实验室 |
