A polymer/small-molecule binary-blend hole transport layer for enhancing charge balance in blue perovskite light emitting diodes
Zhongkai Yu, Woo Hyeon Jeong, Keehoon Kang, Hochan Song, Xinyu Shen, Hyungju Ahn, Seok Woo Lee, Xiangyang Fan, Ji Won Jang, Su Ryong Ha, Jeong Wan Min, Jong Hyun Park, Jongmin Han, Eui Dae Jung, Myoung Hoon Song, Dong Wook Chang, Won Bin Im, Sung Heum Park, Hyosung Choi, Bo Ram Lee
Abstract
A polymer/small-molecule binary-blend hole transport layer provided balanced charge transport and efficient recombination of electrons and holes in the perovskite layer, and an optimal device based on the blended HTL shows the highest EQE of 5.30%.
Topics & Concepts
Perovskite (structure)Materials scienceLayer (electronics)DiodeOptoelectronicsPolymerCharge (physics)ElectronBinary numberMoleculeLight-emitting diodeElectron transport chainComposite materialChemistryPhysicsCrystallographyOrganic chemistryMathematicsArithmeticBiochemistryQuantum mechanicsPerovskite Materials and ApplicationsOrganic Light-Emitting Diodes ResearchOrganic Electronics and Photovoltaics