Thickness Insensitive Organic Solar Cells with High Figure-of-Merit-X Enabled by Simultaneous D/A Interpenetration and Stratification

Xie, Xiyun1,2; Ma, Ruijie1; Luo, Yongmin3; Dela Pena, Top Archie3,4; Fong, Patrick Wai-Keung1; Luo, Dou2; Chandran, Hrisheekesh Thachoth1; Jia, Tao5; Li, Mingjie4; Wu, Jiaying3; Kyaw, Aung Ko Ko2; Li, Gang1

2024-06-01

10.1002/aenm.202401355

ADVANCED ENERGY MATERIALS   影响因子和分区

1614-6832

1614-6840

["Low cost and printing friendly fabrication of organic solar cells (OSCs) require thick-film devices with simply structured photoactive molecules. Thus, achieving high power conversion efficiency (PCE) for non-fused ring acceptor-based devices with high thickness is of great significance. Herein, by transforming traditional blend casting method to emerging sequential deposition (SD) method, D18:A4T-16 active blend exhibits large efficiency improvement from 8.02% to 14.75% in 300 nm thick devices. Systematic morphological and photophysical characterizations showcase the effectiveness of SD processing in achieving sufficient donor/acceptor interpenetration and vertical stratification, which eliminates the dilemma of charge generation/transport in blend casting films. Meanwhile, D18 bottom layer is proven helpful in realizing fast evaporation of postdeposited poor solvent, resulting in naturally thickened active layer with well-regulated crystallization. Furthermore, a new index to emphasize thick-film devices based on nonfused ring acceptors, called figure-of-merit-X (FoM-X), has been defined. The SD processed D18:A4T-16 devices herein, with 300 nm, 500 nm, and 800 nm thicknesses possess leading FoM-X values.","By sequential deposition of using poor solvent to treat bottom polymer donor layer, an outstanding figure-of-merit-X (low-cost and thick-film) organic solar cell is realized. The underlying mechanism is carefully characterized as a interpenetrating and vertical stratified donor-acceptor structure, where donor layer's thickness is the key factor. image"]

nonfused ring acceptor organic solar cells power conversion efficiency sequential deposition thick film

SCI ; EI

英语

通讯

RGC Senior Research Fellowship Scheme[SRFS2223-5S01] ; Shenzhen Science and Technology Innovation Commission[JCYJ20200109105003940] ; Hong Kong Polytechnic University: Sir Sze-yuen Chung Endowed Professorship Fund["8-8480","Q-CD7X","2019B121205001"] ; PolyU Distinguished Postdoctoral Fellowship[1-YW4C] ; Shenzhen Science Technology and Innovation Commission[JCYJ20220530113014033] ; Natural Science Foundation of Guangdong Province[2024A1515010773] ; National Natural Science Foundation of China[62150610496] ; Guangzhou government[2021QN02C110] ; Guangzhou Municipal Science and Technology Project["2023A03J0097","2023A03J0003"] ; NSFC[52303249] ; null[15221320] ; null[15307922] ; null[C4005-22Y]

Chemistry ; Energy & Fuels ; Materials Science ; Physics

Chemistry, Physical ; Energy & Fuels ; Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter

WOS:001247203900001

WILEY-V C H VERLAG GMBH

Web of Science

1.Hong Kong Polytech Univ, Res Inst Smart Energy RISE, Photon Res Inst PRI, Dept Elect & Elect Engn, Hong Kong 999077, Peoples R China
2.Southern Univ Sci & Technol, Guangdong Univ Key Lab Adv Quantum Dot Displays &, Dept Elect & Elect Engn, Shenzhen 518055, Peoples R China
3.Hong Kong Univ Sci & Technol, Adv Mat Thrust, Guangzhou 511400, Peoples R China
4.Hong Kong Polytech Univ, Dept Appl Phys, Hong Kong 999077, Peoples R China
5.Guangdong Polytech Normal Univ, Sch Optoelect Engn, Guangzhou 510665, Peoples R China

Xie, Xiyun,Ma, Ruijie,Luo, Yongmin,et al. Thickness Insensitive Organic Solar Cells with High Figure-of-Merit-X Enabled by Simultaneous D/A Interpenetration and Stratification[J]. ADVANCED ENERGY MATERIALS,2024.

Xie, Xiyun.,Ma, Ruijie.,Luo, Yongmin.,Dela Pena, Top Archie.,Fong, Patrick Wai-Keung.,...&Li, Gang.(2024).Thickness Insensitive Organic Solar Cells with High Figure-of-Merit-X Enabled by Simultaneous D/A Interpenetration and Stratification.ADVANCED ENERGY MATERIALS.

Xie, Xiyun,et al."Thickness Insensitive Organic Solar Cells with High Figure-of-Merit-X Enabled by Simultaneous D/A Interpenetration and Stratification".ADVANCED ENERGY MATERIALS (2024).