@inproceedings{51eb69aa49bf4603b8bf235591445c68,
title = "Improvement of thermal stability of type-II composition-gradient thick-shell quantum dots green light-emitting diodes",
abstract = "Improvement of thermal stability of green quantum dot light emitting diodes (QD-LEDs) was demonstrated by using composition-gradient thick-shell CdSe@ZnS/ZnS quantum dots (QDs). The electroluminescence intensity only decreased 3% even when the operation temperature was elevated to 110 °C. The current efficiency roll-off effect was improved nearly 200% under higher current density. Thick-shell QDs with low defective structure could effectively prevent the electron-hole pairs from nonradiative Auger recombination and avoid the thermal-stress-induced expansion at higher temperatures and driving current. The maximum current efficiency of the thick-shell-device is 10.3 cd/A, which is much higher than 1.57 cd/A for the conventional thin-shell-device.",
keywords = "current efficiency, light-emitting diodes, thermal stability, Thick-shell quantum dots, type-II",
author = "Hsin-Chieh Yu and Vu, {Hoang Tuan}",
year = "2017",
month = jan,
day = "1",
doi = "10.1117/12.2252401",
language = "English",
series = "Proceedings of SPIE - The International Society for Optical Engineering",
publisher = "SPIE",
editor = "Krames, {Michael R.} and Kim, {Jong Kyu} and Li-Wei Tu and Martin Strassburg",
booktitle = "Light-Emitting Diodes",
address = "United States",
note = "null ; Conference date: 30-01-2017 Through 01-02-2017",
}