P‐123: Double Emitting Layer Structure for high efficiency and ultra‐stable blue Triplet‐Triplet Annihilation OLED

Chun-Chieh Chu, Yuan-Zhen Zhuang,Chia‐Hsun Chen,Cheng Hung Chu,Bo‐Yen Lin, Han-Kang Liu, Yuan-Hsiung Tsai,Chih-Hsien Yuan, M.‐k. Leung,Tien‐Lung Chiu,Jiun-Haw Lee

SID Symposium Digest of Technical Papers（2023）

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Abstract

By using the double emitting layer (DEML) structure in a blue triplet‐triplet annihilation organic light‐emitting diode (TTA‐OLED), maximum external quantum efficiency (EQEmax) of 16.1% with CIE coordinates of (0.135, 0.188) and half‐lifetime of 224,000 hours at initial luminance of 1,000 cd/m2was achieved. The degradation mechanism of TTA‐OLEDs was also investigated by conducting photoluminescence degradation experiment.

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double emitting layer structure

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