2D materials for conducting holes from grain boundaries in perovskite solar cells
Peng You,Guanqi Tang,Jiupeng Cao,Dong Shen,Tsz-Wai Ng,Zafer Hawash,Naixiang Wang,Chun Ki Liu,Wei Lu,Qidong Tai,Yabing Qi,Chun-Sing Lee,Feng Yan +12 more
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TLDR
In this article, a 2D flakes with high carrier mobilities and short distances to grain boundaries can induce a more pronounced performance enhancement of the devices, which can significantly enhance the performance of PSCs.Abstract:
Grain boundaries in organic-inorganic halide perovskite solar cells (PSCs) have been found to be detrimental to the photovoltaic performance of devices. Here, we develop a unique approach to overcome this problem by modifying the edges of perovskite grain boundaries with flakes of high-mobility two-dimensional (2D) materials via a convenient solution process. A synergistic effect between the 2D flakes and perovskite grain boundaries is observed for the first time, which can significantly enhance the performance of PSCs. We find that the 2D flakes can conduct holes from the grain boundaries to the hole transport layers in PSCs, thereby making hole channels in the grain boundaries of the devices. Hence, 2D flakes with high carrier mobilities and short distances to grain boundaries can induce a more pronounced performance enhancement of the devices. This work presents a cost-effective strategy for improving the performance of PSCs by using high-mobility 2D materials.read more
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Solution-processed two-dimensional materials for next-generation photovoltaics
Sebastiano Bellani,Antonino Bartolotta,Antonio Agresti,Giuseppe Calogero,Giulia Grancini,Aldo Di Carlo,Aldo Di Carlo,Emmanuel Kymakis,Francesco Bonaccorso +8 more
TL;DR: In this article, a review of the use of solution-processed 2D materials in organic solar cells, dye-sensitized solar cells and perovskite solar cells is presented.
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Fast Photothermoelectric Response in CVD-Grown PdSe2 Photodetectors with In-Plane Anisotropy
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High Open Circuit Voltage Over 1 V Achieved in Tin‐Based Perovskite Solar Cells with a 2D/3D Vertical Heterojunction
Tianyue Wang,Hok Leung Loi,Jiupeng Cao,Zhaotong Qin,Zhiqiang Guan,Yang Xu,Haiyang Cheng,Mitch Guijun Li,Chun-Sing Lee,Xinhui Lu,Feng Yan +10 more
TL;DR: In this paper , a stacked quasi-2D-3D double-layered structure in perovskite films prepared via vacuum treatment is demonstrated, which can result in a planar bilayer heterojunction.
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Achieving Efficient and Stable Perovskite Solar Cells in Ambient Air Through Non-Halide Engineering
Zhen Wang,Junjun Jin,Yapeng Zheng,Xiang Zhang,Zhenkun Zhu,Yuan Zhou,Xiaxia Cui,Jinhua Li,Minghui Shang,Xingzhong Zhao,Sheng Liu,Qidong Tai +11 more
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Organic‐Free and Lead‐Free Perovskite Solar Cells with Efficiency over 11%
Weihai Zhang,Yating Cai,Heng Liu,Yusong Xia,Jieshun Cui,Yue Shi,Rui Chen,Tingting Shi,Hsing-Lin Wang +8 more
TL;DR: In this article , highly performed CsSnI3−xBrx compositional perovskite-based PSCs are achieved by using dimethyl ketoxime (C3H7NO, DMKO) as a multifunctional additive.
References
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Journal ArticleDOI
Organometal Halide Perovskites as Visible-Light Sensitizers for Photovoltaic Cells
TL;DR: Two organolead halide perovskite nanocrystals were found to efficiently sensitize TiO(2) for visible-light conversion in photoelectrochemical cells, which exhibit strong band-gap absorptions as semiconductors.
Journal ArticleDOI
Electron-hole diffusion lengths exceeding 1 micrometer in an organometal trihalide perovskite absorber.
Samuel D. Stranks,Giles E. Eperon,Giulia Grancini,Christopher Menelaou,Marcelo J. P. Alcocer,Tomas Leijtens,Laura M. Herz,Annamaria Petrozza,Henry J. Snaith +8 more
TL;DR: In this article, transient absorption and photoluminescence-quenching measurements were performed to determine the electron-hole diffusion lengths, diffusion constants, and lifetimes in mixed halide and triiodide perovskite absorbers.
Journal ArticleDOI
Black phosphorus field-effect transistors
Likai Li,Yijun Yu,Guo Jun Ye,Q. Q. Ge,Xuedong Ou,Hua Wu,Donglai Feng,Xianhui Chen,Yuanbo Zhang +8 more
TL;DR: In this article, a few-layer black phosphorus crystals with thickness down to a few nanometres are used to construct field effect transistors for nanoelectronic devices. But the performance of these materials is limited.
Journal ArticleDOI
Long-Range Balanced Electron- and Hole-Transport Lengths in Organic-Inorganic CH3NH3PbI3
Guichuan Xing,Nripan Mathews,Shuangyong Sun,Swee Sien Lim,Yeng Ming Lam,Michael Grätzel,Michael Grätzel,Subodh Mhaisalkar,Tze Chien Sum +8 more
TL;DR: Two studies show, using a variety of time-resolved absorption and emission spectroscopic techniques, that perovskite materials manifest relatively long diffusion paths for charge carriers energized by light absorption, highlighting effective carrier diffusion as a fruitful parameter for further optimization.
Journal ArticleDOI
Solvent engineering for high-performance inorganic–organic hybrid perovskite solar cells
TL;DR: A bilayer architecture comprising the key features of mesoscopic and planar structures obtained by a fully solution-based process is reported, providing important progress towards the understanding of the role of solution-processing in the realization of low-cost and highly efficient perovskite solar cells.
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