Journal ArticleDOI
Single-Junction Organic Photovoltaic Cell with 19% Efficiency
Yong Cui,Ye Xu,Huifeng Yao,Pengqing Bi,Ling Hong,Jianqi Zhang,Yunfei Zu,Tao Zhang,Jinzhao Qin,Junzhen Ren,Zhihao Chen,Chang He,Xiaotao Hao,Zhixiang Wei,Zhixiang Wei,Jianhui Hou +15 more
TLDR
In this paper, an active layer comprising a new widebandgap polymer donor named PBQx-TF and a new low-bandgap non-fullerene acceptor (NFA) named eC9-2Cl is rationally designed.Abstract:
Improving power conversion efficiency (PCE) is important for broadening the applications of organic photovoltaic (OPV) cells. Here, a maximum PCE of 19.0% (certified value of 18.7%) is achieved in single-junction OPV cells by combining material design with a ternary blending strategy. An active layer comprising a new wide-bandgap polymer donor named PBQx-TF and a new low-bandgap non-fullerene acceptor (NFA) named eC9-2Cl is rationally designed. With optimized light utilization, the resulting binary cell exhibits a good PCE of 17.7%. An NFA F-BTA3 is then added to the active layer as a third component to simultaneously improve the photovoltaic parameters. The improved light unitization, cascaded energy level alignment, and enhanced intermolecular packing result in open-circuit voltage of 0.879 V, short-circuit current density of 26.7 mA cm-2 , and fill factor of 0.809. This study demonstrates that further improvement of PCEs of high-performance OPV cells requires fine tuning of the electronic structures and morphologies of the active layers.read more
Citations
More filters
Journal ArticleDOI
Single-junction organic solar cells with over 19% efficiency enabled by a refined double-fibril network morphology
Lei Zhu,Ming Zhang,Jinqiu Xu,Chao Li,Jun Yan,Guanqing Zhou,Wenkai Zhong,Tianyu Hao,Jiali Song,Xiaonan Xue,Zichun Zhou,Rui Zeng,Haiming Zhu,Chun-Chao Chen,Roderick C. I. MacKenzie,Yecheng Zou,Jenny Nelson,Yongming Zhang,Yanming Sun,Feng Li +19 more
TL;DR: In this article , a double-fibril network based on a ternary donor-acceptor morphology with multi-length scales was constructed by combining ancillary conjugated polymer crystallizers and a non-fullerene acceptor filament assembly.
Journal ArticleDOI
Realizing 19.05% Efficiency Polymer Solar Cells by Progressively Improving Charge Extraction and Suppressing Charge Recombination
TL;DR: In this paper , the authors improved the charge extraction and suppressed charge recombination of polymer solar cells through the combination of side-chain engineering of new nonfullerene acceptors (NFAs), adopting ternary blends, and introducing volatilizable solid additives.
Journal ArticleDOI
Single‐Junction Organic Solar Cells with 19.17% Efficiency Enabled by Introducing One Asymmetric Guest Acceptor
Rui Sun,Yao Wu,Xinrong Yang,Yuan Gao,Zeng Chen,Kai Li,Jia-Wei Qiao,Jing Guo,Chao Liu,Xiaotao Hao,Hai Yan Zhu,Jie Min +11 more
TL;DR: In this paper , an asymmetric guest acceptor BTP-2F2Cl is designed and incorporated into a PM1:L8•BO host blend, which shows higher photoluminescence quantum yield and larger exciton diffusion length.
Journal ArticleDOI
Binary Organic Solar Cells Breaking 19% via Manipulating the Vertical Component Distribution
Yanan Wei,Zhihao Chen,Guanyu Lu,Na Yu,Congqi Li,Jinhua Gao,Xiaobin Gu,Xiaotao Hao,Guanghao Lu,Zheng Tang,Jian Zhang,Zhixiang Wei,Xin Zhang,Hui Huang +13 more
TL;DR: In this paper , the vertical component distribution can significantly influence the photovoltaic performance of organic solar cells (OSCs), mainly due to its impact on exciton dissociation and charge-carrier transport and recombination.
Journal ArticleDOI
Manipulating the D:A Interfacial Energetics and Intermolecular Packing for 19.2% Efficiency Organic Photovoltaics
Chengliang He,Youwen Pan,Yanni Ouyang,Qing Shen,Yuan Gao,Kangrong Yan,Jin Fang,Yiyao Chen,Chang-Qi Ma,Jie Min,Chunfeng Zhang,Lijian Zuo,Hongzheng Chen +12 more
TL;DR: Manipulating the donor:acceptor (D:A) energetics, e.g., the highest occupied molecular orbital offset, is the key to balancing the charge separation and charge recombination for high-performance organic solar cells as mentioned in this paper .
References
More filters
Journal ArticleDOI
Single-Junction Organic Solar Cell with over 15% Efficiency Using Fused-Ring Acceptor with Electron-Deficient Core
Jun Yuan,Yunqiang Zhang,Liuyang Zhou,Liuyang Zhou,Guichuan Zhang,Hin-Lap Yip,Tsz-Ki Lau,Xinhui Lu,Can Zhu,Can Zhu,Hongjian Peng,Paul A. Johnson,Mario Leclerc,Yong Cao,Jacek Ulanski,Yongfang Li,Yingping Zou +16 more
TL;DR: In this paper, a ladder-type electron-deficient core-based central fused ring (Dithienothiophen[3.2-b]- pyrrolobenzothiadiazole) with a benzothiadiadiazoles (BT) core was proposed to fine-tune its absorption and electron affinity.
Journal ArticleDOI
Fabrication and processing of polymer solar cells: A review of printing and coating techniques
TL;DR: In this paper, the entire process leading to polymer solar cells is broken down into the individual steps and the available techniques and materials for each step are described with focus on the particular advantages and disadvantages associated with each case.
Journal ArticleDOI
An electron acceptor challenging fullerenes for efficient polymer solar cells.
TL;DR: A novel non-fullerene electron acceptor (ITIC) that overcomes some of the shortcomings of fullerene acceptors, for example, weak absorption in the visible spectral region and limited energy-level variability, is designed and synthesized.
Journal ArticleDOI
Aggregation and morphology control enables multiple cases of high-efficiency polymer solar cells.
Yuhang Liu,Jingbo Zhao,Zhengke Li,Cheng Mu,Wei Ma,Huawei Hu,Kui Jiang,Haoran Lin,Harald Ade,He Yan +9 more
TL;DR: The uncovered aggregation and design rules yield three high-efficiency (>10%) donor polymers and will allow further synthetic advances and matching of both the polymer and fullerene materials, potentially leading to significantly improved performance and increased design flexibility.