Results 101 to 110 of about 77,713 (274)

A Programmable Semiconductor Containing Active Molecular Photoswitches Located in the Crystal's Volume Phase

Advanced Functional Materials, EarlyView.
A novel approach for the design of functional semiconductors is presented, which utilizes the excellent optoelectronic properties of layered hybrid perovskites and the possibility to introduce a molecular photoswitch as the organic spacer. This concept is successfully demonstrated on a coumarin‐based system with the possibility to change the bandgap ...
Oliver Treske, Yaşar Krysiak, Hans Tornatzky, Markus R. Wagner, Sebastian Polarz   +4 more
wiley   +1 more source

Interfacing 2D Perovskite Featuring Face‐Sharing Octahedra with 3D Perovskite for Stable Photovoltaics

Small Structures
Combining 2D and 3D perovskites has become a common strategy, and a range of methods for fabricating 2D/3D heterointerfaces jointly improve device performance and stability by grain boundary defect passivation and protective capping layer formation ...
Wei Fan, Shaochen Zhang, Qingqing Liu, Jiahui Shen, Borui Lei, Xiaohe Miao, Qingyun Xiao, Donger Jin, Suirong Xie, Jiazhe Xu, Xirui Liu, Chuanxiao Xiao, Jingjing Xue, Rui Wang   +13 more
doaj   +1 more source

Suppression of Photo‐Mediated Traps in Integrated Organic Photovoltaic–Photodetector Devices via N‐Type Self‐Assembly‐Driven Interfacial Engineering

Advanced Functional Materials, EarlyView.
Conventional unstable electron transport layers (ETLs) limit self‐powered organic sensors. This work resolves this by developing a n‐type self‐assembled monolayer (SAM), “3‐PAPh”. This SAM forms a chemically stable and structurally ordered interface that fundamentally suppresses defect formation.
Ohhyun Kwon, Jae Hoon Son, Tae Hyuk Kim, Gyeong Min Lee, Seunghyun Oh, Gayoung Ham, Min Jong Lee, Sang Heon Lee, Seon Joong Kim, Hyojung Cha, Han Young Woo, Jae Won Shim   +11 more
wiley   +1 more source

Photovoltaics of low-bandgap inorganic perovskites

Green Carbon
Low-bandgap inorganic perovskites are a group of materials that can simultaneously harness the stability merit of an all-inorganic composition and high photovoltaic efficiency potential of low-bandgap light absorbers as compared with other perovskite ...
Mingyu Hu, Changyu Yang, Yalan Zhang, Shihe Yang, Yuanyuan Zhou   +4 more
doaj   +1 more source

From Lead Halide Perovskites to Lead‐Free Metal Halide Perovskites and Perovskite Derivatives

Advanced Materials, 2019
AbstractDespite the exciting progress on power conversion efficiencies, the commercialization of the emerging lead (Pb) halide perovskite solar cell technology still faces significant challenges, one of which is the inclusion of toxic Pb. Searching for Pb‐free perovskite solar cell absorbers is currently an attractive research direction. The approaches
Zewen Xiao, Zhaoning Song, Yanfa Yan
openaire   +3 more sources

Ultrastable Photoactive Halide Perovskite Nanocrystal‐Sensitized SnO2 Nanorods for Room‐Temperature NO2 Detection

Advanced Functional Materials, EarlyView.
ABSTRACT Metal oxide (MOx)‐based NO2 gas sensors typically require high temperatures or ultraviolet light, limiting their practical use. To enable visible‐light activation at room temperature, efficient and stable photosensitizers should be integrated with nanostructured MOx hosts.
Yeonji Yuk, Dokyum Kim, Jun‐Cheol Park, Yoonsung Jung, Inhyeok Oh, Donghyeon Lee, Yejoon Kim, Ji‐Eun Yeo, Young Min Song, Chang‐Lyoul Lee, Sanghan Lee   +10 more
wiley   +1 more source

Trap‐Assisted Transport and Neuromorphic Plasticity in Lead‐Free 2D Perovskites PEA2SnI4

Advanced Functional Materials, EarlyView.
An artificial retina built from lead‐free layered perovskite (PEA)2SnI4 converts light input into a persistent photocurrent and sums successive flashes over time. Micro/nanocrystals integrated on electrodes act as synapse‐like pixels that perform temporal integration directly in hardware. This in‐sensor preprocessing merges detection and computation on
Ofelia Durante, Valeria Demontis, Jonas Riisnaes Karl, Lam Hoi Tung, Sebastiano De Stefano, Daniela Marongiu, Adolfo Mazzotti, Aditya Bhardwaj, Francesco Mattana, Elisa Pili, Selene Matta, Federico Paolucci, Michele Saba, Andrea Mura, Giovanni Bongiovanni, Monica F Craciun, Saverio Russo, Antonio Di Bartolomeo   +17 more
wiley   +1 more source

Excitonic states and structural stability in two-dimensional hybrid organic-inorganic perovskites

Journal of Science: Advanced Materials and Devices, 2019
Two-dimensional (2D) perovskites are a new class of functional materials that may find applications in various technologically important areas. Due to the better moisture and illumination stability, layered perovskites can be the next generation of ...
Yulia Lekina, Ze Xiang Shen
doaj   +1 more source

Nano‐ and Micro‐Sized Solid Materials Used as Antiviral Agents

Advanced Functional Materials, EarlyView.
Due to the rise of viral infections in humans and possible viral outbreaks, the use of nano‐ or micro‐sized materials as antiviral agents is rapidly increasing. This review explores their antiviral properties against RNA and DNA viruses, either as a prevention or a treatment tool, by delving into their mechanisms of action and how to properly assess ...
Orfeas‐Evangelos Plastiras, Imelda Raczkiewicz, Peggy Bouquet, Jean‐Philippe Dacquin, Jeremy Dhainaut, Anne Goffard, Christophe Volkringer   +6 more
wiley   +1 more source

First-principles study on the electronic properties of perovskites MASnaPb(1 − a)XbY(3 − b) (X, Y = Cl, Br, I)

Results in Physics, 2019
According to the first principles, the Cambridge Sequential Total Energy Package (CASTEP) program and Density Functional Theory (DFT) calculation method are used to study the energy band structures and density of states (DOS) through atomic replacement ...
Sheng Chen, Theogene Bimenyimana, Mina Guli   +2 more
doaj   +1 more source