题目：Manganese Doped Tin Oxide for Stable and Efficient Quantum Dot Light–Emitting Diodes

作者：Wenchen Ma,^aZhenwei Ren,^a,* Hengfei Shi,^aXueqing Xia,^bXinwen Wang,^aHuifei Ji,^aHua Chen,^aChengzhao Luo,^aChinhua Wang,^aSong Chen,^b,* Yu Chen^a,c,*

单位：

^aSchool of Optoelectronic Science and Engineering & Collaborative Innovation Center of Suzhou Nano Science and Technology,Soochow University,Suzhou 215006, China

^bCollege of Chemistry, Chemical Engineering and Materials Science, Soochow University,Suzhou 215123,China

^cNational University of Singapore Suzhou Research Institute,Dushu Lake Science and Education Innovation District,Suzhou 215123,China

摘要：As an alternative electron transport material to the chemically unstable ZnOnanoparticles (NPs), SnO₂NPs exhibit a great potential to constructhigh-performance quantum dot light-emitting diodes (QLEDs). However, onlymoderate device performance has been obtained for SnO₂-based QLEDs dueto the low electron mobility, unfavorable energy band, and massive defects ofSnO₂NPs. Herein, a strategy of transition metal doping is reported to achievehigh-quality manganese-doped SnO₂(Mn-SnO₂) NPs to address the aboveproblems. Specifically, the large bond energy of Mn─O bonds reduces theoxygen vacancy defects, prompting an effective suppression of the interfacialexciton quenching for massive radiative recombination. Moreover, thefavorable energy band and high electron mobility for Mn-SnO₂promoteefficient electron injection and transportation. The good optoelectronicproperties for Mn-SnO₂NPs contribute to a great enhancement in deviceefficiency from 8.2 to 11.4% and a remarkable improvement in lifetime (T₉₅)from 565.3 to 1009.2h at 1000 cd⁻², among the best performing ZnO-freeQLEDs. Notably, the Mn-SnO₂based QLEDs show a very superior shelfstability to the QLEDs based on SnO₂and ZnO analogs. Consequently, thiswork reports an effective approach to achieve high-quality SnO₂NPs forefficient and stable QLEDs.

影响因子：11

链接：https://onlinelibrary.wiley.com/doi/epdf/10.1002/lpor.202400005