標題: Achieving highly saturated single-color and high color-rendering-index white light-emitting electrochemical cells by CsPbX3 perovskite color conversion layers
作者: Wang, Cheng-Ming
Su, Yong-Ming
Shih, Ting-An
Chen, Guan-Yu
Chen, Yan-Zhi
Lu, Chin-Wei
Yu, Ing-Song
Yang, Zu-Po
Su, Hai-Ching
光電系統研究所
照明與能源光電研究所
Institute of Photonic System
Institute of Lighting and Energy Photonics
公開日期: 21-十二月-2018
摘要: Solid-state light-emitting electrochemical cells (LECs) have been thought to be applicable for display and lighting due to their advantages such as simple device architecture, low-voltage operation and compatibility with inert cathode metals. Among the emissive materials of LECs, ionic transition metal complexes (iTMCs) exhibit relatively higher emission efficiency but they show relatively broader emission spectra, resulting in lower color saturation for display application. Here, we demonstrated that by integrating perovskite-based color conversion layers (CCLs) with blue iTMC-LECs, highly saturated green, yellow, red and deep-red and high color-rendering-index (CRI) white LECs can be obtained. The Commission Internationale de l'E'clairage (CIE) 1931 coordinates of the highly saturated single-color LECs are almost on the boundary of the National Television System Committee (NTSC) color gamut, showing their potential application in display. By mixing perovskites of different colors at an appropriate ratio in the CCLs, the white LECs show a CRI >90, which is among the highest reported values, and a correlated color temperature of 2649 K. Hence the proposed technique can also be one of the good candidates for lighting applications. In addition, both the highly saturated single-color and white LECs still exhibit efficient emission for display and lighting applications.
URI: http://dx.doi.org/10.1039/c8tc04451a
http://hdl.handle.net/11536/148586
ISSN: 2050-7526
DOI: 10.1039/c8tc04451a
期刊: JOURNAL OF MATERIALS CHEMISTRY C
Volume: 6
顯示於類別:期刊論文