温州大学化学与材料工程学院

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科学研究

祝贺向卫东和梁晓娟老师指导的研究生在Materials Research Bulletin上发表学术论文

发布时间:2018-06-26    来源:化学与材料工程学院    作者:    点击次    [点击关闭]

标题:Photoluminescence properties and device application of CsPb2Br5 quantum dots in glasses

AbstactHerein, CsPb2Br5 quantum dots (QDs) in glasses under various durations of heat-treatment at 420 °C was investigated. Photoluminescence (PL) spectra of CsPb2Br5 QDs were tuned from 499 to 506 nm and the decay time show a increasing for the structure defect and electron-hole consist in CsPb2Br5 QDs glasses. The CsPb2Br5 glass showed an thermal stability with about 85% emission loss when elevating temperature from 298 K to 433 K. Moreover, The warm white light emitting diode (WLED) was realized through incorporating CaAlSiN3:Eu2+ red phosphor with CsPb2Br5 QDs doped borosilicate glasses on an InGaN blue chip. Finally, we achieved a luminous efficacy of 42.7 lm/W, CCT of 3915 K and CRI of 68.5 under 20 mA current driving..

 

原文链接:

https://doi.org/10.1016/j.materresbull.2018.04.028