Journal ArticleDOI
Unveiling the Crystal Formation of Cesium Lead Mixed-Halide Perovskites for Efficient and Stable Solar Cells
TLDR
A previously uncharacterized feature that the formation of black polymorph through optimal annealing temperature proves to be critical to both solar cell efficiency and phase stability is discovered.Abstract:
Thermal instability of organic–inorganic hybrid perovskites will be an inevitable hurdle for commercialization. Recently, all-inorganic cesium lead halide perovskites, in particular, CsPbI2Br, have emerged as thermally stable and efficient photovoltaic light absorbers. However, the fundamental properties of this material have not been studied in detail. The crystal formation behavior of CsPbI2Br is investigated by examining the surface morphology, crystal structure, and chemical state of the perovskite films. We discover a previously uncharacterized feature that the formation of black polymorph through optimal annealing temperature proves to be critical to both solar cell efficiency and phase stability. Our optimized planar heterojunction solar cell exhibits a J–V scan efficiency of 10.7% and open-circuit voltage of 1.23 V, which far outperforms the preceding literature.read more
Citations
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Journal ArticleDOI
All-Inorganic CsPbI2Br Perovskite Solar Cells with High Efficiency Exceeding 13%
TL;DR: An all-inorganic perovskite solar cell with novel structure (FTO/NiO x/CsPbI2Br/ZnO@C60/Ag) was utilized as the electron-transporting layers that demonstrated high carrier extraction efficiency and low leakage loss and largely outperformed the organic-species-containing PSCs.
Journal ArticleDOI
Chemical stability and instability of inorganic halide perovskites
Yuanyuan Zhou,Yixin Zhao +1 more
TL;DR: Inorganic halide perovskites (IHPs) have recently attracted huge attention in the field of optoelectronics as mentioned in this paper, and a lot of effort has been made towards the stabilization of IHPs for high-performance devices.
Journal ArticleDOI
Cubic or Orthorhombic? Revealing the Crystal Structure of Metastable Black-Phase CsPbI3 by Theory and Experiment
Rebecca J. Sutton,Marina R. Filip,Amir A. Haghighirad,Nobuya Sakai,Bernard Wenger,Feliciano Giustino,Feliciano Giustino,Henry J. Snaith +7 more
TL;DR: In this paper, a structural refinement of room-temperature black-phase CsPbI3 in an orthorhombic polymorph is presented, which is adopted by both powders and thin films of black- phase CsPsPbII3, fabricated either by high- or lowtemperature processes.
Journal ArticleDOI
Polymer-Passivated Inorganic Cesium Lead Mixed-Halide Perovskites for Stable and Efficient Solar Cells with High Open-Circuit Voltage over 1.3 V.
Qingsen Zeng,Xiaoyu Zhang,Xiaolei Feng,Siyu Lu,Zhaolai Chen,Xue Yong,Simon A. T. Redfern,Haotong Wei,Hai-Yu Wang,Huaizhong Shen,Wei Zhang,Weitao Zheng,Hao Zhang,John S. Tse,Bai Yang +14 more
TL;DR: It is demonstrated that polythiophene, deposited on the top of CsPbI2 Br, can significantly reduce electron-hole recombination within the perovskite, which is due to the electronic passivation of surface defect states, and the interfacial properties are improved by a simple annealing process.
Journal ArticleDOI
All‐Inorganic CsPbX3 Perovskite Solar Cells: Progress and Prospects
TL;DR: This review aims to summarize the field up to now, propose solutions in terms of development bottlenecks, and attempt to boost further research in CsPbX3 PSCs.
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
Efficient Hybrid Solar Cells Based on Meso-Superstructured Organometal Halide Perovskites
Michael M. Lee,Joël Teuscher,Tsutomu Miyasaka,Takurou N. Murakami,Takurou N. Murakami,Henry J. Snaith +5 more
TL;DR: A low-cost, solution-processable solar cell, based on a highly crystalline perovskite absorber with intense visible to near-infrared absorptivity, that has a power conversion efficiency of 10.9% in a single-junction device under simulated full sunlight is reported.
Journal ArticleDOI
Sequential deposition as a route to high-performance perovskite-sensitized solar cells
Julian Burschka,Norman Pellet,Norman Pellet,Soo-Jin Moon,Robin Humphry-Baker,Peng Gao,Mohammad Khaja Nazeeruddin,Michael Grätzel +7 more
TL;DR: A sequential deposition method for the formation of the perovskite pigment within the porous metal oxide film that greatly increases the reproducibility of their performance and allows the fabrication of solid-state mesoscopic solar cells with unprecedented power conversion efficiencies and high stability.
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
Efficient planar heterojunction perovskite solar cells by vapour deposition
TL;DR: It is shown that perovskite absorbers can function at the highest efficiencies in simplified device architectures, without the need for complex nanostructures.