Organic Solar Cell With Efficiency Over 20% and V-OC Exceeding 2.1 V Enabled by Tandem With All-Inorganic Perovskite and Thermal Annealing-Free Process

Gu, Xiaoyu1; Lai, Xue1,2; Zhang, Yuniu1; Wang, Teng1; Tan, Wen Liang3; McNeill, Christopher R.3; Liu, Qian1,4; Sonar, Prashant4; He, Feng2; Li, Wenhui1; Shan, Chengwei1; Kyaw, Aung Ko Ko1

2022-07-01

10.1002/advs.202200445

ADVANCED SCIENCE   影响因子和分区

2198-3844

Organic solar cells (OSCs) based on polymer donor and non-fullerene acceptor achieve power conversion efficiency (PCE) more than 19% but their poor absorption below 550 nm restricts the harvesting of high-energy photons. In contrast, wide bandgap all-inorganic perovskites limit the absorption of low-energy photons and cause serious below bandgap loss. Therefore, a 2-terminal (2T) monolithic perovskite/organic tandem solar cell (TSC) incorporating wide bandgap CsPbI2Br is demonstrated as front cell absorber and organic PM6:Y6 blend as rear cell absorber, to extend the absorption of OSCs into high-energy photon region. The perovskite sub-cell, featuring a sol-gel prepared ZnO/SnO2 bilayer electron transporting layer, renders a high open-circuit voltage (V-OC). The V-OC is further enhanced by employing thermal annealing (TA)-free process in the fabrication of rear sub-cell, demonstrating a record high V-OC of 2.116 V. The TA-free Ag/PFN-Br interface in organic sub-cell facilitates charge transport and restrains nonradiative recombination. Consequently, a remarkable PCE of 20.6% is achieved in monolithic 2T-TSCs configuration, which is higher than that of both reported single junction and tandem OSCs, demonstrating that tandem with wide bandgap all-inorganic perovskite is a promising strategy to improve the efficiency of OSCs.

electron transporting layers energy loss inter-connecting layers perovskites organic tandem solar cells

SCI ; EI

英语

第一 ; 通讯

National Natural Science Foundation of China[62150610496] ; Guangdong Basic and Applied Basic Research Foundation[2020A1515010916] ; Department of Education of Guangdong Province University Innovation Foundation[2021KTSCX107] ; Australian Research Council[DP210103006]

Chemistry ; Science & Technology - Other Topics ; Materials Science

Chemistry, Multidisciplinary ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary

WOS:000829330000001

WILEY

20223012402589

Bromine compounds ; Energy dissipation ; Energy gap ; II-VI semiconductors ; Lead compounds ; Open circuit voltage ; Organic solar cells ; Perovskite solar cells ; Photons ; Sols ; Zinc oxide

Minerals:482.2 ; Energy Losses (industrial and residential):525.4 ; Solar Cells:702.3 ; Semiconducting Materials:712.1 ; Chemical Products Generally:804 ; Inorganic Compounds:804.2 ; Atomic and Molecular Physics:931.3

Web of Science

1.Southern Univ Sci & Technol, Dept Elect & Elect Engn, Guangdong Univ Key Lab Adv Quantum Dot Displays &, Shenzhen 518055, Peoples R China
2.Southern Univ Sci & Technol, Dept Chem, Shenzhen 518055, Peoples R China
3.Monash Univ, Dept Mat Sci & Engn, Clayton, Vic 3800, Australia
4.Queensland Univ Technol, Ctr Mat Sci, Brisbane, Qld 4000, Australia

Gu, Xiaoyu,Lai, Xue,Zhang, Yuniu,et al. Organic Solar Cell With Efficiency Over 20% and V-OC Exceeding 2.1 V Enabled by Tandem With All-Inorganic Perovskite and Thermal Annealing-Free Process[J]. ADVANCED SCIENCE,2022.

Gu, Xiaoyu.,Lai, Xue.,Zhang, Yuniu.,Wang, Teng.,Tan, Wen Liang.,...&Kyaw, Aung Ko Ko.(2022).Organic Solar Cell With Efficiency Over 20% and V-OC Exceeding 2.1 V Enabled by Tandem With All-Inorganic Perovskite and Thermal Annealing-Free Process.ADVANCED SCIENCE.

Gu, Xiaoyu,et al."Organic Solar Cell With Efficiency Over 20% and V-OC Exceeding 2.1 V Enabled by Tandem With All-Inorganic Perovskite and Thermal Annealing-Free Process".ADVANCED SCIENCE (2022).