Results 61 to 70 of about 15,692 (288)

Seven-Layered 2D Hybrid Lead Iodide Perovskites [PDF]

Chem, 2019
Two-dimensional hybrid halide perovskites offer high chemical versatility, strong potential in optoelectronics. Here, we report the highest layer thickness perovskites yet to be crystallographically characterized, for the Dion-Jacobson (DJ) family. The seven-layered DJ phase (4AMP)(MA) 6Pb 7I 22 (4AMP =4-aminomethylpyperidinium) shows less distortion ...
Mao, Lingling, Kennard, Rhys, Traore, Boubacar, Ke, Weijun, Katan, Claudine, Even, Jacky, Chabinyc, Michael, Stoumpos, Constantinos, Kanatzidis, Mercouri   +8 more
openaire   +1 more source

Spectrally Tunable 2D Material‐Based Infrared Photodetectors for Intelligent Optoelectronics

Advanced Functional Materials, EarlyView.
Intelligent optoelectronics through spectral engineering of 2D material‐based infrared photodetectors. Abstract The evolution of intelligent optoelectronic systems is driven by artificial intelligence (AI). However, their practical realization hinges on the ability to dynamically capture and process optical signals across a broad infrared (IR) spectrum.
Junheon Ha, Yingshan Ma, Yong Nam An, Sung‐Un An, Hyeon Hak Jung, Suvi‐Tuuli Varjamo, Jiwon Yoo, Junho Min, Hanvit Kim, Faisal Ahmed, Sang Hoon Chae, Young Min Song, Weiwei Cai, Tawfique Hasan, Zhipei Sun, Dong‐Ho Kang, Hyeon‐Jin Shin, Yunyun Dai, Hoon Hahn Yoon   +18 more
wiley   +1 more source

Layered Perovskite Materials for Photocatalytic Overall Water Splitting: Recent Advances, Enhanced Strategies, and Future Challenges

EcoEnergy
Achieving sustainable energy generation without causing environmental pollution is one of modern society's grand challenges. Photocatalytic overall water splitting (OWS) presents a sustainable option for producing the green energy vector H2 while ...
Na Li, Chao Cheng, Yilin Wang, Alex W. Robertson, Zhenyu Sun   +4 more
doaj   +1 more source

Two-dimensional Ruddlesden–Popper layered perovskite for light-emitting diodes

APL Materials, 2020
Solution-processed metal halide perovskite light-emitting diodes (PeLEDs) have attracted extensive attention due to the great potential application in energy-efficient lighting and displays.
Bo Sun, Ying Xu, Yonghua Chen, Wei Huang
doaj   +1 more source

Butanediammonium Salt Additives for Increasing Functional and Operando Stability of Light-Harvesting Materials in Perovskite Solar Cells

Nanomaterials, 2022
Organic diammonium cations are a promising component of both layered (2D) and conventional (3D) hybrid halide perovskites in terms of increasing the stability of perovskite solar cells (PSCs).
Natalia N. Udalova, Aleksandra K. Moskalenko, Nikolai A. Belich, Pavel A. Ivlev, Andrey S. Tutantsev, Eugene A. Goodilin, Alexey B. Tarasov   +6 more
doaj   +1 more source

Theory of prospective tetrahedral perovskite ferroelectrics

, 2010
Using first-principles methods, we predict the energy landscape and ferroelectric states of double perovskites of the form AA$'$BB$'$O$_6$ in which the atoms on both the A and B sites are arranged in rock-salt order.
Roy, Anindya, Vanderbilt, David
core   +1 more source

Exciton Binding Energy Modulation in 2D Perovskites: A Phenomenological Keldysh Framework

Advanced Functional Materials, EarlyView.
The intrinsic screening effects are successfully decoupled from structural distortion by rigorously designing a series of 2D perovskites. This enabled us to demonstrate how the dielectric environment modulates the quasiparticle bandgap and exciton binding energy.
Kitae Kim, Namhee Kwon, Sang Woo Park, Wonsik Kim, Seunghwan Kim, Eunki Yoon, Aelim Ha, Donggyu Lee, Young Yong Kim, Jong‐Cheol Lee, Sungho Lee, Junghan Lee, Kyu Hyoung Lee, Yeonjin Yi, Ki‐Ha Hong, Soohyung Park   +15 more
wiley   +1 more source

Charge and spin stripe in La$_{2-x}$Sr$_{x}$NiO$_{4}$ (x=1/3,1/2) [PDF]

, 2007
Electronic structure of stripe ordered La$_{2-x}$Sr$_{x}$NiO$_{4}$ is investigated. The system with x=1/3 is insulator, in LSDA+U calculations, and shows charge and spin stripe, consistent with the experimental results.
Fujiwara Takeo, Hatsugai Yasuhiro, Yamamoto Susumu, 初貝 安弘   +3 more
core   +2 more sources

Selection Strategies for Flexible Pressure Sensor Electrode Materials Toward Ultrafast Response

Advanced Functional Materials, EarlyView.
This study reveals, for the first time, how the electrode–organic interface governs the temporal performance of flexible pressure sensors. By pairing high‐conductivity CVD PEDOT with commonly used metal electrodes, the authors demonstrate that interfacial energy alignment dictates microsecond‐scale response, providing a straightforward design strategy ...
Jinwook Baek, Yuxuan Zhang, Hyeondong Yang, Minyoung Kim, Pavlos P. Vlachos, Jeongok Choe, Bo‐Gyu Bok, Kejie Zhao, Han‐Wook Song, Min‐Seok Kim, Martin Byung‐Guk Jun, Sunghwan Lee   +11 more
wiley   +1 more source

Optoelectronic Nanodevices

Nanomaterials, 2020
Over the last decade, novel materials such as graphene derivatives, transition metal dichalcogenides (TMDs), other two-dimensional (2D) layered materials, perovskites, as well as metal oxides and other metal nanostructures have centralized the interest ...
Minas M. Stylianakis
doaj   +1 more source