High-efficiency hybrid solar cells based on polymer/PbSx Se1-x nanocrystals benefiting from vertical phase segregation.
Solution-processed hybrid solar cells employing a low band-gap polymer and PbSx Se1-x alloy nanocrystals, achieving a record high PCE of 5.50% and an optimal FF of 67% are presented. The remarkable device efficiency can be attributed to the high-performance active materials, the optimal polymer/NCs ratio and, more importantly, the vertical donor/(donor:acceptor)/acceptor structure which benefits charge dissociation and transport.
Institute of Functional Nano & Soft Materials (FUNSOM) Soochow University, 199 Ren-Ai Road, Suzhou Industrial Park, Suzhou, Jiangsu, 215123, China.
Zeke
Z
Liu
Yaxiang
Y
Sun
Jianyu
J
Yuan
Huaixin
H
Wei
Xiaodong
X
Huang
Lu
L
Han
Weiwei
W
Wang
Haiqiao
H
Wang
Wanli
W
Ma
D000497:Alloys / Q000737:chemistry; D004583:Electrons; D005459:Fluorides / Q000737:chemistry; D018020:Lithium Compounds / Q000737:chemistry; D053758:Nanoparticles / Q000737:chemistry*; D011108:Polymers / Q000737:chemistry*; D011137:Polystyrenes / Q000737:chemistry; D011789:Quantum Theory; D012993:Solar Energy; D013876:Thiophenes / Q000737:chemistry; D017971:Tin Compounds / Q000737:chemistry
D000497:Alloys; D018020:Lithium Compounds; D011108:Polymers; D011137:Polystyrenes; D013876:Thiophenes; D017971:Tin Compounds; C533756:poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate); C027651:lithium fluoride; C109984:indium tin oxide; D005459:Fluorides
PbSxSe1-x nanocrystals; hybrid solar cells; three-dimensional morphology; vertical phase segregation