Results 61 to 70 of about 112,220 (315)

Dynamic tilting in perovskites

Acta Crystallographica Section A Foundations and Advances, 2023
A new computational analysis of tilt behaviour in perovskites is presented. This includes the development of a computational program – PALAMEDES – to extract tilt angles and the tilt phase from molecular dynamics simulations. The results are used to generate simulated selected-area electron and neutron diffraction patterns which are compared with ...
Handley, C.M., Ward, R.E., Freeman, C.L., Reaney, I.M., Sinclair, D.C., Harding, J.H.   +5 more
openaire   +3 more sources

Deformation-Induced Mechanical Instabilities at the Core-Mantle Boundary

, 2007
Post-Perovskite: The Last Mantle Phase Transition Our understanding of the core-mantle boundary (CMB) region has improved significantly over the past several years due, in part, to the discovery of the post-perovskite phase.
Petford, Nick; id_orcid, Yuen, David A., David A. Yuen, Tracy Rushmer, Petford, Nick, Yuen, D.A., Rushmer, Tracy, Nick Petford   +7 more
core   +1 more source

The Role of Ultra‐Thin Buffer Layers for Achieving Ultra‐Low Dark Currents in Single‐Component Organic Photodetectors

Advanced Functional Materials, EarlyView.
Here, SubNc single‐component organic photodiodes (SC‐OPDs) are investigated, which achieve highly competitive performance metrics, including high EQE, ultra‐low JD, and high specific detectivity (D*). This study emphasizes the critical role of an organic buffer layer in studying the interface energetics and effects to achieve state‐of‐the‐art ...
Anncharlott Kusber, Ying Sun, Jakob Wolansky, Louis Conrad Winkler, Anna‐Lena Hofmann, Fred Kretschmer, Hrisheekesh Thachoth Chandran, Tianyi Zhang, Mike Hambsch, Stefan C. B. Mannsfeld, Karl Leo, Ji‐Seon Kim, Johannes Benduhn   +12 more
wiley   +1 more source

Conversion of metal-organic halide perovskite from PbI2 precursor films grown by hot-wall method [PDF]

MATEC Web of Conferences, 2018
We report on metal-organic halide perovskite CH3NH3PbI3 films converted from PbI2 precursors for planar heterojunction perovskite solar cells. PbI2 films as a precursor were deposited by hot-wall method and conventional vacuum evaporation. The conversion
Seto Satoru, Shimizu Rintaro, Tokuda Makoto   +2 more
doaj   +1 more source

Achieving High ON State Current through Ferroelectric Polarization‐Dependent Interfacial Resistance Switching in Undoped Orthorhombic HfO2 Films

Advanced Functional Materials, EarlyView.
Ferroelectric tunnel junction devices based on epitaxial undoped ferroelectric HfO2 films demonstrate stable switching endurance of over 106 switching cycles, low write voltages of ±3 V, 16 measured resistance states, and neuromorphic capability.
Markus Hellenbrand, Nuno Estrócio, Ji S. Kim, Babak Bakhit, Marian C. Istrate, Corneliu Ghica, Tiago Rebelo, Nives Strkalj, Abin Varghese, Bernardo Almeida, Luís S. Marques, Bipin Rajendran, Judith L. MacManus‐Driscoll, José P. B. Silva   +13 more
wiley   +1 more source

Homogeneous FACsPbI3 Films via Sequential Deposition for Efficient and Stable Perovskite Solar Cells

Advanced Science
Despite significant advancements in the power conversion efficiency (PCE) of FAPbI3‐based perovskite solar cells (PSCs), their commercialization remains hindered by stability issues.
Xiongzhuo Jiang, Jie Zeng, Kun Sun, Zerui Li, Guangjiu Pan, Renjun Guo, Matthias Schwartzkopf, Stephan V. Roth, Baomin Xu, Peter Müller‐Buschbaum   +9 more
doaj   +1 more source

Research Progress of Semi-Transparent Perovskite and Four-Terminal Perovskite/Silicon Tandem Solar Cells

Energies
Perovskite/silicon tandem solar cells are of great interest due to their potential for breaking the Shockley-Queisser limit of single-junction silicon solar cells.
Yunlong Zhang, Long Zhou, Chunfu Zhang
doaj   +1 more source

NaI Doping Effect on Photophysical Properties of Organic-Lead-Halide Perovskite Thin Films by Using Solution Process

Advances in Materials Science and Engineering, 2019
Perovskite solar cells (PSCs) have been developed rapidly in recent years. How to modify the photophysical properties of perovskite films has become the critical issue, affecting device performance.
Chuangchuang Chang, Xiaoping Zou, Jin Cheng, Ying Yang, Yujun Yao, Tao Ling, Haiyan Ren   +6 more
doaj   +1 more source

X‐Functionality–Driven Photocatalytic Hydrogen Evolution in 2D 4‐X‐PEA2SnI4 Perovskites

Advanced Functional Materials, EarlyView.
We report a water‐based synthesis of 2D 4‐X‐PEA2SnI4 perovskite microcrystals with prominent photocatalytic (PC) activity for H2 production. The synergy between organic functionalization and HI‐derived iodide scavenges holes suppress octahedral distortion, and favor electron accumulation, enabling a PC H2 evolution ∼20 µmol·g−1 and long‐term stability ...
Taeyeon Kim, Gayoung Seo, Seong Yeon Park, Juwon Jang, Yunho Ahn, Samiksha Mukesh Jain, Samrat Das Adhikari, Harumi Correa‐Leiva, Ignacio Utreras‐Asenjo, Oscar A. Douglas‐Gallardo, Carina Pareja‐Rivera, Kayoung Cho, Byeongsung Kim, Jhonatan Rodriguez‐Pereira, Eunseo Choi, JaeHong Park, Jin Ho Bang, Danilo H. Jara‐Quinteros, Sixto Giménez, Seog Joon Yoon, Andrés F. Gualdrón‐Reyes, Iván Mora‐Seró   +21 more
wiley   +1 more source

Dissolved-Cl2 triggered redox reaction enables high-performance perovskite solar cells

Nature Communications, 2023
Constructing 2D/3D perovskite heterojunctions is effective for the surface passivation of perovskite solar cells (PSCs). However, previous reports that studying perovskite post-treatment only physically deposits 2D perovskite on the 3D perovskite, and ...
Yujie Luo, Kaikai Liu, Liu Yang, Wenjing Feng, Lingfang Zheng, Lina Shen, Yongbin Jin, Zheng Fang, Peiquan Song, Wanjia Tian, Peng Xu, Yuqing Li, Chengbo Tian, Liqiang Xie, Zhanhua Wei   +14 more
doaj   +1 more source