Results 81 to 90 of about 5,632 (290)

Optoelectronic Properties of Layered Perovskite Solar Cells [PDF]

Solar RRL, 2019
Herein, the optoelectronic properties of interface‐engineered perovskite 2D|3D‐heterojunction structure solar cells are reported. The reciprocity theorem is applied to determine the maximum open‐circuit voltage (Voc) the device can deliver under solar illumination.
Bekele Hailegnaw, Sanghyun Paek, Kyung Taek Cho, Yonghui Lee, Fathi Ongül, Mohammad Khaja Nazeeruddin, Markus Clark Scharber   +6 more
openaire   +2 more sources

Phase Evolution Kinetics in Additive‐Free 19.75% Organic Photovoltaics Empowered by Solvent Vapor Annealing

Advanced Functional Materials, EarlyView.
Solvent vapor annealing enables kinetic control of additive‐free morphology in organic solar cells. Selective plasticization of acceptor forms an optimal fibrillar network, boosting efficiency to 19.06% (binary) and 19.75% (ternary), with ultrafast exciton dissociation and reduced recombination.
Jie Lv, Jieni Chen, Cenqi Yan, Patrick W. K. Fong, Jingjing Zhao, Daming Zheng, DingQin Hu, Xiaoman Ding, Xiaokang Sun, Chuanlin Gao, Guangye Zhang, Qianguang Yang, Can Zhu, Pei Cheng, Shirong Lu, Zhipeng Kan, Zhiwei Ren, Guangliu Ran, Wenkai Zhang, Hanlin Hu, Gang Li   +20 more
wiley   +1 more source

Enhancing the Aqueous Stability of CsPbBr3 by Growth in Nanoscopic Layered Silicates

Advanced Energy & Sustainability Research
Lead halide perovskites have led to huge advances in solar cells, emitters, and sensors due to the high efficiency of charge generation in such materials.
Eike B. Clasen, Marten Rittner, Eric H. Hill   +2 more
doaj   +1 more source

Enhancement of Dielectric Breakdown Strength and Recoverable Energy Density in Three‐Dimensional Heterointerfaces on BaTiO3–PbZrO3–PbTiO3 Films via Room‐Temperature Nano‐Clustering

Advanced Functional Materials, EarlyView.
A room‐temperature aerosol deposition process yields multiphase nano‐clustered dielectric capacitors containing discrete BaTiO3, PbZrO3, and PbTiO3 crystals. This architecture creates three‐dimensional heterointerfaces that induce interfacial charge trapping and effectively inhibit breakdown propagation.
Hyunseok Song, Ke Xu, Donggeon Baek, Dayeong Hur, Minjae Kim, Hyun‐Cheol Song, Dae‐Yong Jeong, Houbing Huang, Jungho Ryu   +8 more
wiley   +1 more source

Polaron Vibronic Progression Shapes the Optical Response of 2D Perovskites

Advanced Science
The optical response of 2D layered perovskites is composed of multiple equally‐spaced spectral features, often interpreted as phonon replicas, separated by an energy Δ ≃ 12 − 40 meV, depending upon the compound.
Mateusz Dyksik, Dorian Beret, Michal Baranowski, Herman Duim, Sébastien Moyano, Katarzyna Posmyk, Adnen Mlayah, Sampson Adjokatse, Duncan K. Maude, Maria Antonietta Loi, Pascal Puech, Paulina Plochocka   +11 more
doaj   +1 more source

Hybrid Solar Cell/Triboelectric Nanogenerator Based on Stable Two‐Dimensional Covalent Organic Frameworks

Advanced Functional Materials, EarlyView.
This study highlights the integration of stable two‐dimensional covalent organic framework (COF) films as photoactive layers in hybrid nanoenergy devices. The results demonstrate their capacity to generate electricity under both sunny and rainy conditions, showcasing versatility and resilience.
Joab D. Guerrero, Susana Ramos‐Terrón, Salvador R. G. Balestra, José M. Malagón, David Aparicio, Lucia Velasco, Asterios Charisiadis, Dooshaye Moonshiram, Margarita Darder, Pilar Aranda, Bernd Wicklein, Gustavo de Miguel, Javier Pérez‐Carvajal, Eva M. García‐Frutos   +13 more
wiley   +1 more source

Controlled Engineering of 2D Alkali‐Iron‐Chloride Compounds and Lateral Quantum Heterostructures Within Confined Graphene Nanoreactors

Advanced Functional Materials, EarlyView.
This work presents a programmable atomic engineering strategy for 2D materials using Å‐scale nanoreactors formed by bilayer graphene (BLG) intercalation. A new class of alkali‐iron‐chloride compounds, along with lateral heterostructures composed of monolayer alkali halides and iron chlorides, is revealed.
Haiming Sun, Qiunan Liu, Yung‐Chang Lin, Mahdi Ghorbani‐Asl, Hiroki Ago, Arkady V. Krasheninnikov, Kazu Suenaga   +6 more
wiley   +1 more source

Circular photogalvanic spectroscopy of Rashba splitting in 2D hybrid organic–inorganic perovskite multiple quantum wells

Nature Communications, 2020
Hybrid organic-inorganic perovskites (HOIP) have high potential for spintronics applications. Using the circular photogalvanic effect the authors demonstrate the existence of Rashba-splitting in the continuum bands of a 2D layered HOIP that results from ...
Xiaojie Liu, Ashish Chanana, Uyen Huynh, Fei Xue, Paul Haney, Steve Blair, Xiaomei Jiang, Z. V. Vardeny   +7 more
doaj   +1 more source

Intercalation engineering in layered Halide Perovskites

, 2019
International audience3D halide perovskites are exciting materials for optoelectronic applications1 and amazing new solar cell devices2,3. 2D Halide Perovskites also allow both stabilizing and functionalizing the 3D structures.
Even, Jacky, Pedesseau, Laurent, Traore, Boubacar, Kepenekian, Mikaël, Katan, Claudine   +4 more
core  

Giant Magnetic Coercivity Driven by Spin‐Bag Ferromagnetism in Epitaxial Sr3YCo4O10+δ Films with Engineered 2D Oxygen Vacancy Ordering

Advanced Functional Materials, EarlyView.
A giant magnetic coercivity and a vertical shift of hysteresis loops are demonstrated in Sr3YCo4O10+δ epitaxial films. The hard magnetic behavior originates from ferromagnetic spin bags stabilized within a long‐range ordered oxygen‐vacancy structure.
Yanbin Chen, Roger Guzman, Xiaomin Jia, Jialu Wu, Xing Xu, Li Sun, Jinbo Pan, Shixuan Du, Myung‐Hwan Whangbo, Wu Zhou, Jing Ma, Ce‐wen Nan, Chonglin Chen   +12 more
wiley   +1 more source