نتایج جستجو برای: based perovskites

تعداد نتایج: 2938220  

Journal: :Physical chemistry chemical physics : PCCP 2014
Edoardo Mosconi Claudio Quarti Tanja Ivanovska Giampiero Ruani Filippo De Angelis

Organo-halide lead perovskites are revolutionizing the photovoltaic scenario, with efficiencies exceeding 15%. The orientational dynamics disorder of the methylammonium cations (MA) is one of the most peculiar features of these materials. Here, we perform ab initio molecular dynamics simulations and IR spectroscopic measurements on lead halide hybrid perovskites to elucidate the rotational moti...

Journal: :The journal of physical chemistry letters 2016
Lingrui Wang Kai Wang Guanjun Xiao Qiaoshi Zeng Bo Zou

Organometal halide perovskites are promising materials for optoelectronic devices. Further development of these devices requires a deep understanding of their fundamental structure-property relationships. The effect of pressure on the structural evolution and band gap shifts of methylammonium lead chloride (MAPbCl3) was investigated systematically. Synchrotron X-ray diffraction and Raman experi...

2017
Zhao Yuan Chenkun Zhou Yu Tian Yu Shu Joshua Messier Jamie C Wang Lambertus J van de Burgt Konstantinos Kountouriotis Yan Xin Ethan Holt Kirk Schanze Ronald Clark Theo Siegrist Biwu Ma

Organic-inorganic hybrid metal halide perovskites, an emerging class of solution processable photoactive materials, welcome a new member with a one-dimensional structure. Herein we report the synthesis, crystal structure and photophysical properties of one-dimensional organic lead bromide perovskites, C4N2H14PbBr4, in which the edge sharing octahedral lead bromide chains [PbBr4 2-]∞ are surroun...

2016
Kyu-Sup Lee Rira Kang Byungwoo Son Dong-Yu Kim Nan Ei Yu Do-Kyeong Ko

Hybrid structures of silicon with organic-inorganic perovskites are proposed for optically controllable switching of terahertz (THz) waves over a broad spectral range from 0.2 to 2THz. A 532-nm external laser was utilized to generate photoexcited free carriers at the devices and consequentially to control the terahertz amplitude modulation, obtaining a depth of up to 68% at a laser irradiance o...

Journal: :Nanoscale 2016
J Even M Carignano C Katan

The complexity of hybrid organic perovskites calls for an innovative theoretical view that combines usually disconnected concepts in order to achieve a comprehensive picture: (i) the intended applications of this class of materials are currently in the realm of conventional semiconductors, which reveal the key desired properties for the design of efficient devices. (ii) The reorientational dyna...

2016
Z. G. Yu

Hybrid inorganic-organic perovskites have proven to be a revolutionary material for low-cost photovoltaic applications. They also exhibit many other interesting properties, including giant Rashba splitting, large-radius Wannier excitons, and novel magneto-optical effects. Understanding these properties as well as the detailed mechanism of photovoltaics requires a reliable and accessible electro...

2016
Oscar Diaz-Morales Stefan Raaijman Ruud Kortlever Patricia J Kooyman Tim Wezendonk Jorge Gascon W T Fu Marc T M Koper

The development of active, cost-effective and stable oxygen-evolving catalysts is one of the major challenges for solar-to-fuel conversion towards sustainable energy generation. Iridium oxide exhibits the best available compromise between catalytic activity and stability in acid media, but it is prohibitively expensive for large-scale applications. Therefore, preparing oxygen-evolving catalysts...

Journal: :Science 2015
Wanyi Nie Hsinhan Tsai Reza Asadpour Jean-Christophe Blancon Amanda J Neukirch Gautam Gupta Jared J Crochet Manish Chhowalla Sergei Tretiak Muhammad A Alam Hsing-Lin Wang Aditya D Mohite

State-of-the-art photovoltaics use high-purity, large-area, wafer-scale single-crystalline semiconductors grown by sophisticated, high-temperature crystal growth processes. We demonstrate a solution-based hot-casting technique to grow continuous, pinhole-free thin films of organometallic perovskites with millimeter-scale crystalline grains. We fabricated planar solar cells with efficiencies app...

2017
Antoine A Emery Chris Wolverton

ABO3 perovskites are oxide materials that are used for a variety of applications such as solid oxide fuel cells, piezo-, ferro-electricity and water splitting. Due to their remarkable stability with respect to cation substitution, new compounds for such applications potentially await discovery. In this work, we present an exhaustive dataset of formation energies of 5,329 cubic and distorted per...

2016
G. Pilania A. Mannodi-Kanakkithodi B. P. Uberuaga R. Ramprasad J. E. Gubernatis T. Lookman

The ability to make rapid and accurate predictions on bandgaps of double perovskites is of much practical interest for a range of applications. While quantum mechanical computations for high-fidelity bandgaps are enormously computation-time intensive and thus impractical in high throughput studies, informatics-based statistical learning approaches can be a promising alternative. Here we demonst...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید