Figshare最新文献

筛选

英文中文

Crown Ethers Enable Room-Temperature Synthesis ofnCsPbBr3 Quantum Dots for Light-Emitting Diodes 冠醚实现了用于发光二极管的nCsPbBr&lt；sub>3</sub&gt；量子点的室温合成

Figshare Pub Date : 2018-02-05 DOI: 10.1021/acsenergylett.7b01257.s001

SjoerdA. Veldhuis (2830031), Yan Fong Ng (4116244), Riyas Ahmad (4822485), Annalisa Bruno (1415371), Nur Fadilah Jamaludin (4116241), Bahulayan Damodaran (4822482), Nripan Mathews (1356642), Subodh G. Mhaisalkar (1775722)

{"title":"Crown Ethers Enable Room-Temperature Synthesis ofnCsPbBr3 Quantum Dots for Light-Emitting Diodes","authors":"SjoerdA. Veldhuis (2830031), Yan Fong Ng (4116244), Riyas Ahmad (4822485), Annalisa Bruno (1415371), Nur Fadilah Jamaludin (4116241), Bahulayan Damodaran (4822482), Nripan Mathews (1356642), Subodh G. Mhaisalkar (1775722)","doi":"10.1021/acsenergylett.7b01257.s001","DOIUrl":"https://doi.org/10.1021/acsenergylett.7b01257.s001","url":null,"abstract":"Thensynthesis of all-inorganic cesium lead halide perovskite quantumndots (QDs) typically requires high temperatures, stringent conditions,nlarge quantities of surface ligands, and judicious purification stepsnto overcome ligand-induced charge injection barriers in optoelectronicndevices. Low-temperature syntheses generally require lower ligandnconcentrations but are severely limited by the low solubility of thenCs precursor. We describe an innovative and general approach employingncrown ethers under ambient conditions to overcome these solubilitynlimitations. The crown ethers facilitate complete dissolution of thenCsBr precursor, rendering CsPbBr3 QD inks practical forndevice fabrication. The resultant light-emitting diodes (LEDs) displayednbright green emission, with a current efficiency and external quantumnefficiency of 9.22 cd A–1 and 2.64%, respectively.nThis represents the first LED based on CsPbBr3 QDs preparednat room temperature. Lastly, the crown ethers form core–shellnstructures, opening new avenues to exploit their strong coordinationnstrength.","PeriodicalId":522745,"journal":{"name":"Figshare","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-02-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147902570","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0