Results 41 to 50 of about 10,585 (284)

(INVITED) Revisiting Duffy's model for Sb3+ and Bi3+ in double halide perovskites: Emergence of a descriptor for machine learning

Optical Materials: X, 2021
The Duffy's model is reformulated for Sb3+ and Bi3+ in cubic chloro- and bromo-elpasolites with « 0D » perovskite structure. The new equation allows calculating the energy of the first s2 → s1p1 electron transition from crystal structure data. The Stokes
Philippe Boutinaud
doaj   +1 more source

Materials Discovery of Stable and Nontoxic Halide Perovskite Materials for High-Efficiency Solar Cells

, 2019
Two critical limitations of organic-inorganic lead halide perovskite materials for solar cells are their poor stability in humid environments and inclusion of toxic lead.
Jacobs, Ryan, Luo, Guangfu, Morgan, Dane
core   +2 more sources

Spatial Electron-hole Separation in a One Dimensional Hybrid Organic-Inorganic Lead Iodide. [PDF]

, 2016
The increasing efficiency of the inorganic-organic hybrid halides has revolutionised photovoltaic research. Despite this rapid progress, the significant issues of poor stability and toxicity have yet to be suitably overcome.
Bronstein, H, Palgrave, RG, Savory, CN, Scanlon, DO   +3 more
core   +2 more sources

Low energy paths for octahedral tilting in inorganic halide perovskites

, 2018
Instabilities relating to cooperative octahedral tilting is common in materials with perovskite structures, and in particular in the sub class of halide perovskites.
Klarbring, Johan
core   +1 more source

All-Inorganic Metal Halide Perovskite Nanocrystals: Opportunities and Challenges. [PDF]

, 2018
The past decade has witnessed the growing interest in metal halide perovskites as driven by their promising applications in diverse fields. The low intrinsic stability of the early developed organic versions has however hampered their widespread ...
Yin, Yadong, Zhang, Qiao
core   +1 more source

Systematic derivation of a surface polarization model for planar perovskite solar cells [PDF]

, 2017
Increasing evidence suggests that the presence of mobile ions in perovskite solar cells can cause a current-voltage curve hysteresis. Steady state and transient current-voltage characteristics of a planar metal halide CH$_3$NH$_3$PbI$_3$ perovskite solar
Courtier, N. E., Foster, J. M., O'Kane, S. E. J., Richardson, G., Walker, A. B.   +4 more
core   +2 more sources

Enhancing the photophysical properties of absorption and luminescence in lightly doped halide double perovskite nanomaterials (Cs2Ag1-aBi1-bPbxBr6): Theory and experiment

Next Materials
Lead-free halide double perovskites, such as Cs2AgBiX6, have emerged as less toxic alternatives to the lead-based solar cell absorbers, APbX3 (where A is a monovalent cation and X is halide). Despite their potential application in photovoltaics and x-ray
Celal Kursun, Mohammed Mehedi Hasan, Alamgir Kabir, Ismahan Duz Parrey, Khursheed Ahmad Parrey   +4 more
doaj   +1 more source

Effects of Cesium/Formamidinium Co-Addition to Perovskite Solar Cells

Engineering Proceedings, 2022
In this study, the stabilities and conversion efficiencies of perovskite solar cells including cesium (Cs) or formamidinium (FA) at the CH₃NH₃ site were investigated.
Ren Nonomura, Takeo Oku, Iori Ono, Atsushi Suzuki, Masanobu Okita, Sakiko Fukunishi, Tomoharu Tachikawa, Tomoya Hasegawa   +7 more
doaj   +1 more source

Identification of Free and Bound Exciton States and Their Phase-Dependent Trapping Behavior in Lead Halide Perovskites

, 2017
In this work we probe the sub-gap energy states within polycrystalline and single crystal lead halide perovskites to better understand their intrinsic photophysics behaviors.
Jasieniak, Jacek J., Li, Dongmei, Li, Yiming, Li, Yusheng, Luo, Yanhong, Meng, Qingbo, Shi, Jiangjian, Wu, Huijue, Zhang, Huiyin   +8 more
core   +1 more source

Fine Structure of Excitons in Vacancy-Ordered Halide Double Perovskites

ACS Materials Letters, 2022
Vacancy ordered halide double perovskites (VODP) have been widely explored throughout the past few years as promising lead-free alternatives for optoelectronic applications. Yet, the atomic-scale mechanisms that underlie their optical properties remain elusive.
Cucco, Bruno, Katan, Claudine, Even, Jacky, Kepenekian, Mikaël, Volonakis, George   +4 more
openaire   +2 more sources