標題: Resonant-Enhanced Full-Color Emission of Quantum-Dot-Based Display Technology Using a Pulsed Spray Method
作者: Chen, Kuo-Ju
Chen, Hsin-Chu
Tsai, Kai-An
Lin, Chien-Chung
Tsai, Hsin-Han
Chien, Shih-Hsuan
Cheng, Bo-Siao
Hsu, Yung-Jung
Shih, Min-Hsiung
Tsai, Chih-Hao
Shih, His-Hsin
Kuo, Hao-Chung
材料科學與工程學系
光電系統研究所
光電工程學系
Department of Materials Science and Engineering
Institute of Photonic System
Department of Photonics
關鍵字: light-emitting diodes;quantum dots;resonant cavity enhanced devices
公開日期: 19-十二月-2012
摘要: Colloidal quantum-dot light-emitting diodes (QDLEDs) with the HfO2/SiO2-distributed Bragg reflector (DBR) structure are fabricated using a pulsed spray coating method. Pixelated RGB arrays, 2-in. wafer-scale white light emission, and an integrated small footprint white light device are demonstrated. The experimental results show that the intensity of red, green, and blue (RGB) emission exhibited considerable enhancement because of the high reflectivity in the UV region by the DBR structure, which subsequently increases the use in the UV optical pumping of RGB QDs. A pulsed spray coating method is crucial in providing uniform RGB layers, and the polydimethylsiloxane (PDMS) film is used as the interface layer between each RGB color to avoid cross-contamination and self-assembly of QDs. Furthermore, the chromaticity coordinates of QDLEDs with the DBR structure remain constant under various pumping powers in the large area sample, whereas a larger shift toward high color temperatures is observed in the integrated device. The resulting color gamut of the proposed QDLEDs covers an area 1.2 times larger than that of the NTSC standard, which is favorable for the next generation of high-quality display technology.
URI: http://dx.doi.org/10.1002/adfm.201200765
http://hdl.handle.net/11536/20821
ISSN: 1616-301X
DOI: 10.1002/adfm.201200765
期刊: ADVANCED FUNCTIONAL MATERIALS
Volume: 22
Issue: 24
起始頁: 5138
結束頁: 5143
顯示於類別:期刊論文


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  1. 000312301800008.pdf