Highly oriented perovskites for efficient light-emitting diodes with balanced charge transport

doi:10.1016/j.orgel.2019.105529

CORC > 上海应用物理研究所 > 中国科学院上海应用物理研究所 > 中科院上海应用物理研究所2011-2017年

	Highly oriented perovskites for efficient light-emitting diodes with balanced charge transport
	Du, HY ; Hui, W ; Tang, LQ ; Qiu, J ; Niu, TT ; Yang, YG ; Gao, XY ; Xia, YD ; Chen, YH ; Huang, W
刊名	ORGANIC ELECTRONICS
	2020
卷号	77 页码:-
关键词	PASSIVATION DYNAMICS IODIDE
ISSN号	1566-1199
DOI	10.1016/j.orgel.2019.105529
文献子类	期刊论文
英文摘要	Ruddlesden-Popper (RP) perovskites have attracted interests due to high performance in perovskite light-emitting diodes (PeLEDs). However, the insulating organic spacers decrease carrier mobility, and increase charge accumulation and non-radiative recombination losses, which significantly undermine device performance. Herein, by blending NH3I(CH2)(8)NH3I (ODA) and INH3(CH2)(2)O(CH2)(2)O(CH2)(2)NH3I (EDBE) large organic spacers into the precursor solution, we achieve preferential orientation of perovskite crystals perpendicular to the substrate with conductive channels across the two injecting electrodes. Consequently, effective charge injection and balanced charge transport are achieved, which is beneficial to increase radiation recombination. A low turn-on voltage of 1.4 V is achieved for mixture-1.5 perovskite (ODA: EDBE = 3:2, molar ratio) PeLEDs, and a maximum external quantum efficiency increases to 5.8% (EL peak approximate to 766 nm) at 2.0 V with a current density of 6.05 mA cm(-2) compared to that of the pure ODA (2.4%) and EDBE (1.1%) devices. The findings may spur new developments in charge injection and electron-hole balance for realizing efficient PeLEDs.
语种	英语
内容类型	期刊论文
源URL	[http://ir.sinap.ac.cn/handle/331007/32906]
专题	上海应用物理研究所_中科院上海应用物理研究所2011-2017年
作者单位	1.Nanjing Univ Posts & Telecommun, IAM, KLOEID, 9 Wenyuan Rd, Nanjing 210023, Jiangsu, Peoples R China 2.Northwestern Polytech Univ, Shaanxi Inst Flexible Elect SIFE, 127 West Youyi Rd, Xian 710072, Peoples R China 3.Nanjing Tech Univ, Jiangsu Natl Synergist Innovat Ctr Adv Mat SICAM, KLOFE, NanjingTech, 30 South Puzhu Rd, Nanjing 211816, Peoples R China 4.Nanjing Tech Univ, Inst Adv Mat, Jiangsu Natl Synergist Innovat Ctr Adv Mat SICAM, NanjingTech, 30 South Puzhu Rd, Nanjing 211816, Peoples R China 5.Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai Synchrotron Radiat Facil, Shanghai 201204, Peoples R China
推荐引用方式 GB/T 7714	Du, HY,Hui, W,Tang, LQ,et al. Highly oriented perovskites for efficient light-emitting diodes with balanced charge transport[J]. ORGANIC ELECTRONICS,2020,77:-.
APA	Du, HY.,Hui, W.,Tang, LQ.,Qiu, J.,Niu, TT.,...&Huang, W.(2020).Highly oriented perovskites for efficient light-emitting diodes with balanced charge transport.ORGANIC ELECTRONICS,77,-.
MLA	Du, HY,et al."Highly oriented perovskites for efficient light-emitting diodes with balanced charge transport".ORGANIC ELECTRONICS 77(2020):-.