Multifunctional lead-free double perovskites demonstrate remarkable potential towards applications in various fields.Herein,an environmentally-friendly,low-cost,high-throughput Cs_(2)NaFeCl_(6) single crystal with exc...Multifunctional lead-free double perovskites demonstrate remarkable potential towards applications in various fields.Herein,an environmentally-friendly,low-cost,high-throughput Cs_(2)NaFeCl_(6) single crystal with exceedingly high thermal stability is designed and grown.It obtains a cubic lattice system in the temperature range of 80-500 K,accompanied by a completely reversible chromatic variation ranging from yellow to black.Importantly,the intriguing thermochromism is proved to own extremely high reproducibility(over 1000 cycles)without a hysteretic effect,originating from its structural flexibility that including(i)the noteworthy distortion/deformation of[NaCl_(6)]5−and[FeCl_(6)]3−octahedra;(ii)order-disorder arrangement transition of[NaCl_(6)]5−and[FeCl6]3−octahedra as the function of temperature.This study paves the way towards a new class of smart windows and camouflage coatings with an unprecedented colour range based on a Cs_(2)NaFeCl_(6) perovskite.展开更多
Organic-inorganic halide perovskites have attracted huge attentions as the novel photoelectric function materials. So far, perovskite solar cells （PSCs） with prominent performance are still based on the lead halide ...Organic-inorganic halide perovskites have attracted huge attentions as the novel photoelectric function materials. So far, perovskite solar cells （PSCs） with prominent performance are still based on the lead halide perovskites, although they are potentially highly toxic. The issue of toxicity has become one of most crucial problems before its commercialization. Therefore, an increasing number of studies have focused on the lead element substitution in PSCs. and many excellent achievements have been reported. Alternative elements, e.g., Sn, Ge, Bi and Sb were successively used to fabricate lead-free perovskites, which provided potential possibility to tackle the toxicity issue. Recently. Sn-Pb hybrid perovskites were demonstrated to realize lead reduction without sacrificing the PCE. In addition, a new family of halide double-perovskites was explored and given high expectations. Here, we give a brief review on the lead substitution in PSCs, including theoretical explorations and experimental achievements, and finally we propose some perspectives.展开更多
Organic-inorganic hybrid metal halide perovskite materials have attracted much research interest over the past decade because of their unique electrical and optoelectronic properties, e.g., long diffusion length, high...Organic-inorganic hybrid metal halide perovskite materials have attracted much research interest over the past decade because of their unique electrical and optoelectronic properties, e.g., long diffusion length, high charge mobility, low binding energy, high absorption coefficient, and low density of trap states.展开更多
A cost-effective and high-throughput material named perovskite has proven to be capable of converting 15.9%of the solar energy to electricity,compared to an efficiency of 3.8%that was obtained only four years ago.It h...A cost-effective and high-throughput material named perovskite has proven to be capable of converting 15.9%of the solar energy to electricity,compared to an efficiency of 3.8%that was obtained only four years ago.It has already outperformed most of the thin-film solar cell technologies that researchers have been studying for decades.Currently,the architecture of perovskite solar cells has been simplified from the traditional dye-sensitized solar cells to planar-heterojunction solar cells.Recently,the performance of perovskite in solar cells has attracted intensive attention and studies.Foreseeably,many transformative steps will be put forward over the coming few years.In this review,we summarize the recent exciting development in perovskite solar cells,and discuss the fundamental mechanisms of perovskite materials in solar cells and their structural evolution.In addition,future directions and prospects are proposed toward high-efficiency perovskite solar cells for practical applications.展开更多
基金supported by the National Natural Science Foundation of China(22075103,22175076)the Guangdong Basic and Applied Basic Research Foundation for Distinguished Young Scholar(2019B151502030,2018B030306004)+4 种基金the Natural Science Foundation of Guangdong Province(2022A1515010489)the Science and Technology Plan Project of Guangzhou(202002030159)the Fundamental Research Funds for the Central Universities(21621112)the State Key Laboratory of Crystal Materials,Shandong University(KF21-03)the"Young Top Talents"in the Pearl River Talent Project of Guangdong Province(2017GC010424)。
基金The research was funded by the National Natural Science Foundation of China(No.51802120,51872126,22075103,51672111)Guangdong Basic and Applied Basic Research Foundation for Distinguished Young Scholar(No.2019B151502030)+7 种基金Natural Science Foundation of Guangdong Province(No.2018030310181)the Science and Technology Plan Project of Guangzhou(No.202002030159)Guangdong Basic and Applied Basic Research Foundation for Young Scholar(No.2020A1515111057)‘100 Talents Program of Hebei Province’(No.E2014100008)the Fundamental Research Funds for the Central Universities(No.21619406)X.Y.thanks for the Special Funds for the Cultivation of Guangdong College Students'Scientific and Technological Innovation("Climbing Program"Special Funds)(No.pdjh2019a0055)J.Fan also thanks for the project support for"Young Top talents"in the Pearl River Talent Project of Guangdong Province(2017GC010424)the Guangdong Provincial Innovation and Entrepreneurship Project(grant 2016ZT06D081).
文摘Multifunctional lead-free double perovskites demonstrate remarkable potential towards applications in various fields.Herein,an environmentally-friendly,low-cost,high-throughput Cs_(2)NaFeCl_(6) single crystal with exceedingly high thermal stability is designed and grown.It obtains a cubic lattice system in the temperature range of 80-500 K,accompanied by a completely reversible chromatic variation ranging from yellow to black.Importantly,the intriguing thermochromism is proved to own extremely high reproducibility(over 1000 cycles)without a hysteretic effect,originating from its structural flexibility that including(i)the noteworthy distortion/deformation of[NaCl_(6)]5−and[FeCl_(6)]3−octahedra;(ii)order-disorder arrangement transition of[NaCl_(6)]5−and[FeCl6]3−octahedra as the function of temperature.This study paves the way towards a new class of smart windows and camouflage coatings with an unprecedented colour range based on a Cs_(2)NaFeCl_(6) perovskite.
基金funded by the National Natural Science Foundation of China(No.51672111)"973 Program" Early Projects(No.2014CB260405)+3 种基金the Advanced Talents Program of Hebei Province(No.GCC2014013)the Top Young Outstanding Innovative Talents Program of Hebei Province(No.BJ2014009)the Natural Science Foundation of Hebei Province(No.F2015201189)the support of "100 Talents Program of Hebei Province"(E2014100008)
文摘Organic-inorganic halide perovskites have attracted huge attentions as the novel photoelectric function materials. So far, perovskite solar cells （PSCs） with prominent performance are still based on the lead halide perovskites, although they are potentially highly toxic. The issue of toxicity has become one of most crucial problems before its commercialization. Therefore, an increasing number of studies have focused on the lead element substitution in PSCs. and many excellent achievements have been reported. Alternative elements, e.g., Sn, Ge, Bi and Sb were successively used to fabricate lead-free perovskites, which provided potential possibility to tackle the toxicity issue. Recently. Sn-Pb hybrid perovskites were demonstrated to realize lead reduction without sacrificing the PCE. In addition, a new family of halide double-perovskites was explored and given high expectations. Here, we give a brief review on the lead substitution in PSCs, including theoretical explorations and experimental achievements, and finally we propose some perspectives.
基金supported by the National Natural Science Foundation of China (51872126, 22075103, 51802120, 51672111)Guangdong Basic and Applied Basic Research Foundation for Distinguished Young Scholar (2019B151502030)+6 种基金the Science and Technology Plan Project of Guangzhou (202002030159)2020 Guangdong Recruitment Program for Foreign Experts (2020A1414010277)the Fundamental Research Funds for the Central Universities (21619406)the project for "Young Top Talents" in the Pearl River Talent Project of Guangdong Province (2017GC010424)Guangdong Provincial Innovation and Entrepreneurship Project (2016ZT06D081)the National Key Research and Development Program of China (2017YFA0206600)the National Natural Science Foundation of China (51773045, 21772030, 51922032, 21961160720) for financial support
文摘Organic-inorganic hybrid metal halide perovskite materials have attracted much research interest over the past decade because of their unique electrical and optoelectronic properties, e.g., long diffusion length, high charge mobility, low binding energy, high absorption coefficient, and low density of trap states.
基金the Victorian Government under the Victoria Science Agenda(VSA)scheme.Min Gu and Baohua Jia thank the Australian Research Council for its support(DP140100849)。
文摘A cost-effective and high-throughput material named perovskite has proven to be capable of converting 15.9%of the solar energy to electricity,compared to an efficiency of 3.8%that was obtained only four years ago.It has already outperformed most of the thin-film solar cell technologies that researchers have been studying for decades.Currently,the architecture of perovskite solar cells has been simplified from the traditional dye-sensitized solar cells to planar-heterojunction solar cells.Recently,the performance of perovskite in solar cells has attracted intensive attention and studies.Foreseeably,many transformative steps will be put forward over the coming few years.In this review,we summarize the recent exciting development in perovskite solar cells,and discuss the fundamental mechanisms of perovskite materials in solar cells and their structural evolution.In addition,future directions and prospects are proposed toward high-efficiency perovskite solar cells for practical applications.
