Journal ArticleDOI
Dopant-Free Squaraine-Based Polymeric Hole-Transporting Materials with Comprehensive Passivation Effects for Efficient All-Inorganic Perovskite Solar Cells.
Qi Xiao,Jingjing Tian,Qifan Xue,Jing Wang,Bijin Xiong,Mengmeng Han,Zhen Li,Zonglong Zhu,Hin-Lap Yip,Zhong'an Li +9 more
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TLDR
It is demonstrated that polymerizing SQs into pseudo two dimensional p-π conjugated polymers is a feasible solution to overcome this challenge and the resulting polysquaraine HTMs not only exhibit suitable energy levels and efficient passivation effects, but also achieve very high hole mobility.Abstract:
Development of high-performance dopant-free hole-transporting materials (HTMs) with comprehensive passivation effects is highly desirable for all-inorganic perovskite solar cells (PVSCs). Squaraines (SQs) could be a candidate for dopant-free HTMs as they are natural passivators for perovskites. One major limitation of SQs is their relatively low hole mobility. Herein we demonstrate that polymerizing SQs into pseudo two dimensional (2D) p-π conjugated polymers could overcome this problem. By rationally using N,N-diarylanilinosquaraines as the comonomers, the resulting polysquaraine HTMs not only exhibit suitable energy levels and efficient passivation effects, but also achieve very high hole mobility close to 0.01 cm-2 V-1 s-1 . Thus as dopant-free HTMs for α-CsPbI2 Br-based all-inorganic PVSCs, the best PCE reached is 15.5 %, outperforming those of the doped-Spiro-OMeTAD (14.4 %) based control devices and among the best for all-inorganic PVSCs.read more
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Journal ArticleDOI
Inorganic Halide Perovskite Solar Cells: Progress and Challenges
Jingjing Tian,Qifan Xue,Qin Yao,Ning Li,Ning Li,Ning Li,Christoph J. Brabec,Christoph J. Brabec,Hin-Lap Yip +8 more
Journal ArticleDOI
D-A-π-A-D-type Dopant-free Hole Transport Material for Low-Cost, Efficient, and Stable Perovskite Solar Cells
Tianqi Niu,Weiya Zhu,Yiheng Zhang,Qifan Xue,Xuechen Jiao,Zijie Wang,Yue-Min Xie,Ping Li,Runfeng Chen,Fei Huang,Yuan Li,Hin-Lap Yip,Yong Cao +12 more
TL;DR: In this paper, the authors proposed DTB-FL, a low-cost and efficient hole transport materials (HTM) for the commercialization of perovskite solar cells (PSCs), featuring facile synthesis and excellent optoelectronic properties.
Journal ArticleDOI
Tailoring Component Interaction for Air-Processed Efficient and Stable All-Inorganic Perovskite Photovoltaic
Xiaojuan Wang,Xueqin Ran,Xiaotao Liu,Hao Gu,Shouwei Zuo,Wei Hui,Hui Lu,Bo Sun,Xingyu Gao,Jing Zhang,Yingdong Xia,Yonghua Chen,Wei Huang,Wei Huang,Wei Huang +14 more
TL;DR: In this paper, an interaction tailoring strategy for all-inorganic CsPbI3-x Brx perovskites by involving the ionic liquid solvent methylammonium acetate (MAAc) is presented.
Journal ArticleDOI
Teaching an Old Anchoring Group New Tricks: Enabling Low-Cost, Eco-Friendly Hole-Transporting Materials for Efficient and Stable Perovskite Solar Cells.
Yang Wang,Qiaogan Liao,Qiaogan Liao,Jianhua Chen,Wei Huang,Xinming Zhuang,Yumin Tang,Bolin Li,Xiyu Yao,Xiyuan Feng,Xianhe Zhang,Mengyao Su,Zhubing He,Tobin J. Marks,Antonio Facchetti,Xugang Guo +15 more
TL;DR: A traditional anchoring group (2-cyanoacrylic acid) widely used in molecules for dye-sensitized solar cells is incorporated into donor-acceptor type HTMs to afford MPA-BT-CA, which enables effective regulation of the frontier molecular orbital energy levels and efficient defect passivation toward perovskite layer.
Journal ArticleDOI
Dual-Protection Strategy for High-Efficiency and Stable CsPbI2Br Inorganic Perovskite Solar Cells
Sheng Fu,Wenxiao Zhang,Xiaodong Li,Li Wan,Yulei Wu,Lijun Chen,Xiaohui Liu,Junfeng Fang,Junfeng Fang +8 more
TL;DR: In this article, a dual-protection strategy was proposed for perovskite solar cells, which is shown to improve the performance of the opening circuit voltage loss and poor moisture stability.
References
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Journal ArticleDOI
Quantum dot-induced phase stabilization of α-CsPbI3 perovskite for high-efficiency photovoltaics.
Abhishek Swarnkar,Abhishek Swarnkar,Ashley R. Marshall,Ashley R. Marshall,Erin M. Sanehira,Erin M. Sanehira,Boris D. Chernomordik,David T. Moore,Jeffrey A. Christians,Tamoghna Chakrabarti,Joseph M. Luther +10 more
TL;DR: N nanoscale phase stabilization of CsPbI3 quantum dots (QDs) to low temperatures that can be used as the active component of efficient optoelectronic devices and describe the formation of α-CsP bI3 QD films that are phase-stable for months in ambient air.
Journal ArticleDOI
Halide Perovskite Photovoltaics: Background, Status, and Future Prospects
TL;DR: The fundamentals, recent research progress, present status, and views on future prospects of perovskite-based photovoltaics, with discussions focused on strategies to improve both intrinsic and extrinsic (environmental) stabilities of high-efficiency devices are described.
Journal ArticleDOI
Enhanced photoluminescence and solar cell performance via Lewis base passivation of organic-inorganic lead halide perovskites.
Nakita K. Noel,Antonio Abate,Samuel D. Stranks,Elizabeth S. Parrott,Victor M. Burlakov,Alain Goriely,Henry J. Snaith +6 more
TL;DR: It is proposed that this is due to the electronic passivation of under-coordinated Pb atoms within the crystal, and power conversion efficiencies for solution-processed planar heterojunction solar cells enhanced from 13% for the untreated solar cells to 15.3% and 16.5% for thiophene and pyridine-treated solar cells, respectively.
Journal ArticleDOI
Inorganic caesium lead iodide perovskite solar cells
Giles E. Eperon,Giuseppe M. Paternò,Giuseppe M. Paternò,Rebecca J. Sutton,Andrea Zampetti,Andrea Zampetti,Amir A. Haghighirad,Franco Cacialli,Franco Cacialli,Henry J. Snaith +9 more
TL;DR: In this paper, the authors showed that the organic cation is not essential, but simply a convenience for forming lead triiodide perovskites with good photovoltaic properties.
Journal ArticleDOI
Understanding Degradation Mechanisms and Improving Stability of Perovskite Photovoltaics.
Caleb C. Boyd,Rongrong Cheacharoen,Rongrong Cheacharoen,Tomas Leijtens,Tomas Leijtens,Michael D. McGehee,Michael D. McGehee +6 more
TL;DR: Recommendations are made on how accelerated testing should be performed to rapidly develop solar cells that are both extraordinarily efficient and stable.