CH3NH3PbI3 perovskites: Ferroelasticity revealed
Evgheni Strelcov,Evgheni Strelcov,Qingfeng Dong,Tao Li,Jungseok Chae,Jungseok Chae,Yuchuan Shao,Yehao Deng,Alexei Gruverman,Jinsong Huang,Andrea Centrone +10 more
Reads0
Chats0
TLDR
Experiments show that the configuration of CH3NH3PbI3 ferroelastic domains in single crystals and polycrystalline films can be controlled with applied stress, suggesting that strain engineering may be used to tune the properties of this material.Abstract:
Ferroelectricity has been proposed as a plausible mechanism to explain the high photovoltaic conversion efficiency in organic-inorganic perovskites; however, convincing experimental evidence in support of this hypothesis is still missing. Identifying and distinguishing ferroelectricity from other properties, such as piezoelectricity, ferroelasticity, etc., is typically nontrivial because these phenomena can coexist in many materials. In this work, a combination of microscopic and nanoscale techniques provides solid evidence for the existence of ferroelastic domains in both CH3NH3PbI3 polycrystalline films and single crystals in the pristine state and under applied stress. Experiments show that the configuration of CH3NH3PbI3 ferroelastic domains in single crystals and polycrystalline films can be controlled with applied stress, suggesting that strain engineering may be used to tune the properties of this material. No evidence of concomitant ferroelectricity was observed. Because grain boundaries have an impact on the long-term stability of organic-inorganic perovskite devices, and because the ferroelastic domain boundaries may differ from regular grain boundaries, the discovery of ferroelasticity provides a new variable to consider in the quest for improving their stability and enabling their widespread adoption.read more
Citations
More filters
Journal ArticleDOI
Direct atomic scale characterization of the surface structure and planar defects in the organic-inorganic hybrid CH3NH3PbI3 by Cryo-TEM
Yuanmin Zhu,Zhigang Gui,Qi Wang,Fanxu Meng,Shihui Feng,Bing Han,Peiyi Wang,Li Huang,Hsing-Lin Wang,Meng Gu +9 more
TL;DR: In this paper, the state-of-the-art cryo-transmission electron microscopy (C-TEM) was used for the characterization of CH3NH3PbI3 (MAPbI) single crystal.
Journal ArticleDOI
Two-dimensional ferroelasticity in van der Waals β'-In2Se3.
Chao Xu,Jianfeng Mao,Xuyun Guo,Shanru Yan,Yancong Chen,Tsz Wing Lo,Changsheng Chen,Dangyuan Lei,Xin Luo,Jianhua Hao,Changxi Zheng,Ye Zhu +11 more
TL;DR: In this paper, the authors presented the experimental demonstration of 2D ferroelasticity in both exfoliated and chemical-vapor-deposited β'-In2Se3 down to few-layer thickness and identified quantitatively 2D spontaneous strain originating from in-plane antiferroelectric distortion.
Journal ArticleDOI
Dynamic behavior of CH3NH3PbI3 perovskite twin domains
Yongtao Liu,Yongtao Liu,Liam Collins,Alex Belianinov,Sabine M. Neumayer,Anton V. Ievlev,Mahshid Ahmadi,Kai Xiao,Scott T. Retterer,Stephen Jesse,Sergei V. Kalinin,Bin Hu,Olga S. Ovchinnikova +12 more
TL;DR: In this paper, the authors reveal the variation in elasticity between adjacent domains, indicating the ferroelasticity and the difference in the crystallographic states of the twin domain, and dynamically map the evolution of the two-domain structure under electric bias.
Journal ArticleDOI
Strain effects on halide perovskite solar cells
Bowen Yang,Dmitry Bogachuk,Jia-Jia Suo,D.L. Wagner,Hobeom Kim,Jae-Min Lim,A. Hinsch,Gerrit Boschloo,Mohammad Khaja Nazeeruddin,Anders Hagfeldt +9 more
TL;DR: In this paper , the authors summarized the origins of strain, characterization techniques, and implications of strain on both perovskite film and solar cells as well as various strategies to control the strain.
References
More filters
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
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 Article
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 paper, 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
The emergence of perovskite solar cells
TL;DR: In this article, a review describes the rapid progress that has been made in hybrid organic-inorganic perovskite solar cells and their applications in the photovoltaic sector.