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Improved Efficiency Of Perovskite Light-Emitting Diodes Using A Three-Step Spin-Coated Ch3nh3pbbr3 Emitter And A Pedot:Pss/Moo3-Ammonia Composite Hole Transport Layer, Yuanming Zhou, Sijong Mei, Dongwei Sun, Neng Liu, Wuxing Shi, Jiahuan Feng, Fei Mei, Jinxia Xu, Yan Jiang, Xianan Cao
Improved Efficiency Of Perovskite Light-Emitting Diodes Using A Three-Step Spin-Coated Ch3nh3pbbr3 Emitter And A Pedot:Pss/Moo3-Ammonia Composite Hole Transport Layer, Yuanming Zhou, Sijong Mei, Dongwei Sun, Neng Liu, Wuxing Shi, Jiahuan Feng, Fei Mei, Jinxia Xu, Yan Jiang, Xianan Cao
Faculty & Staff Scholarship
High efficiency perovskite light-emitting diodes (PeLEDs) using PEDOT:PSS/MoO3-ammonia composite hole transport layers (HTLs) with different MoO3-ammonia ratios were prepared and characterized. For PeLEDs with one-step spin-coated CH3NH3PbBr3 emitter, an optimal MoO3-ammonia volume ratio (0.02) in PEDOT:PSS/MoO3-ammonia composite HTL presented a maximum luminance of 1082 cd/m2 and maximum current efficiency of 0.7 cd/A, which are 82% and 94% higher than those of the control device using pure PEDOT:PSS HTL respectively. It can be explained by that the optimized amount of MoO3-ammonia in the composite HTLs cannot only facilitate hole injection into CH3NH3PbBr3 through reducing the contact barrier, but also suppress the …