通向钙钛矿电泵浦激光的研究进展  

Research Progress Towards Perovskite Electrical Driven Lasers

作　　者：魏衍福 李国辉 潘登 温荣 冀婷 冯琳 崔艳霞 WEI Yan-fu;LI Guo-hui;PAN Deng;WEN Rong;JI Ting;FENG Lin;CUI Yan-xia(College of Physics and Optoelectronics,Taiyuan University of Technology,Taiyuan 030024,China)

机构地区：[1]太原理工大学物理与光电工程学院,山西太原030024

出　　处：《发光学报》2022年第10期1478-1494,共17页Chinese Journal of Luminescence

基　　金：国家自然科学基金(U21A20496,61922060,61775156,61805172,12104334,62174117,61905173);山西省自然科学基金面上青年基金(20210302123154,20210302123169)资助项目。

摘　　要：可溶液法制备的钙钛矿拥有优异的光学、电学性能,是一类极具潜力的电泵浦激光增益介质。近年来,基于钙钛矿材料的室温连续光泵浦激光以及大电流电致发光器件陆续被报道,在通向钙钛矿电泵浦激光的研究上取得了可喜进展,本文以此为主题展开综述。首先,介绍了钙钛矿材料实现电泵浦激光的优势。接着,梳理了现阶段通向钙钛矿电泵浦激光的两大问题,即非辐射复合损耗高和热效应严重,同时给出了改善这两大问题可采取的一些有效策略。然后,给出了电荷注入平衡化、降低光学损耗、促进粒子数反转等补充手段,它们有力推动了通向钙钛矿电泵浦激光研究向前发展。此外,还介绍了钙钛矿表面等离激元激光、钙钛矿激子极化激元激光等有望实现低阈值钙钛矿电泵浦激光的新机制。最后,总结全文,并对电泵浦钙钛矿激光未来研究做出了展望。Solution-processed perovskites,having excellent optical and electrical properties,can serve as a kind of promising electrically driven laser gain medium.In recent years,progresses towards electrically driven lasers based on perovskite materials have been made.For instance,a series of room-temperature continuous-wave optically-pumped perovskite lasers along with a few highcurrent perovskite light emitting diodes(LEDs)have been reported.This paper takes this topic as the review subject.Firstly,the advantages of perovskite materials for developing electrical driven lasers are introduced.Then,the two major constraints towards electrical driven perovskite lasers at the present stage,including high non-radiative recombination loss and serious thermal effect,are introduced,and some strategies to break through these constraints are given.Subsequently,this paper gives supplementary means such as balancing the charge injection,reducing optical loss,and promoting population inversion,which have effectively promoted the development of perovskite electrical pumped laser research.This paper also introduces the recent progresses of surface plasmon polariton lasers,exciton polariton lasers,etc.,based on perovskite materials,which possess the potential to reduce the laser thresholds,as alternatives for realizing electrical driven perovskite lasers.Finally,the full text is summarized,and the future research towards electrical driven perovskite lasers is prospected.

关 键 词：钙钛矿 激光器 电泵浦 激光阈值 

分 类 号：TN365[电子电信—物理电子学]