TY - JOUR
T1 - Emission spectral stability modification of tandem organic light-emitting diodes through controlling charge-carrier migration and outcoupling efficiency at intermediate/emitting unit interface
AU - Zhao, Dan
AU - Huang, Wei
AU - Qin, Zining
AU - Wang, Zijun
AU - Yu, Junsheng
N1 - Funding Information:
National Natural Science Foundation of China (NSFC) (Grant No. 61675041)
Funding Information:
The authors gratefully acknowledge the financial support from the Foundation of National Natural Science Foundation of China (NSFC) (Grant No. 61675041), the Foundation of Innovation Research Groups of NSFC (Grant No. 61421002), and Science & Technology Department of Sichuan Province (Grant Nos. 2016HH0027 and 2016FZ0100).
Publisher Copyright:
© 2018 American Chemical Society.
PY - 2018/3/31
Y1 - 2018/3/31
N2 - An intermediate unit (IMU) of tandem organic light-emitting diode (TOLED) can affect the emission spectral stability because of the different charge-carrier migration and outcoupling efficiency at intermediate/emitting unit interface. In this work, an IMU consisting of carbon 60 and copper(II) phthalocyanine, inserted between red-emitting unit and blueemitting unit, were constructed and fabricated. We focus on the effect of the relative location of the red-emitting unit and blue-emitting unit in the device configuration on the emission spectral stability of TOLED. In the color-Tunable TOLED, a maximum current efficiency of 20.4 cd/A, along with lightemitting spectra tuning from red emission at (0.63, 0.31) according to Commission Internationale de L'Eclairage coordinates at a bias of 10 V to white emission at (0.34, 0.27) at 22 V, is realized. Meanwhile, in the color-stable TOLED, a maximum current efficiency of 15.5 cd/A and a stable white emission at (0.31, 0.27) in a wide range of biases from 12 to 22 V are also obtained. This work might inspire a promising approach for the fabrication of color-Tunable and color-stable OLEDs for both information display and solid-state lighting.
AB - An intermediate unit (IMU) of tandem organic light-emitting diode (TOLED) can affect the emission spectral stability because of the different charge-carrier migration and outcoupling efficiency at intermediate/emitting unit interface. In this work, an IMU consisting of carbon 60 and copper(II) phthalocyanine, inserted between red-emitting unit and blueemitting unit, were constructed and fabricated. We focus on the effect of the relative location of the red-emitting unit and blue-emitting unit in the device configuration on the emission spectral stability of TOLED. In the color-Tunable TOLED, a maximum current efficiency of 20.4 cd/A, along with lightemitting spectra tuning from red emission at (0.63, 0.31) according to Commission Internationale de L'Eclairage coordinates at a bias of 10 V to white emission at (0.34, 0.27) at 22 V, is realized. Meanwhile, in the color-stable TOLED, a maximum current efficiency of 15.5 cd/A and a stable white emission at (0.31, 0.27) in a wide range of biases from 12 to 22 V are also obtained. This work might inspire a promising approach for the fabrication of color-Tunable and color-stable OLEDs for both information display and solid-state lighting.
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U2 - 10.1021/acsomega.8b00314
DO - 10.1021/acsomega.8b00314
M3 - Article
C2 - 31458590
AN - SCOPUS:85052700661
SN - 2470-1343
VL - 3
SP - 3348
EP - 3356
JO - ACS Omega
JF - ACS Omega
IS - 3
ER -