Results 191 to 200 of about 17,173 (248)

Redox‐Dependent Luminescence in a Pentavalent Uranyl Complex

ChemistryEurope, EarlyView.
Redox‐dependent luminescence in a molecular pentavalent uranyl complex supported by a pyridine dipyrrolide pincer ligand is presented. Electrochemical and chemical reduction of the uranyl(VI) species provides a stable uranyl(V) complex that emits blue light from a high‐energy excited state. The anti‐Kasha emission is credited to the presence of “nested”
Leyla R. Valerio, Asmita Sen, William W. Brennessel, Carsten Milsmann, Jochen Autschbach, Ellen M. Matson   +5 more
wiley   +1 more source

Hole‐Selective Self‐Assembled Monolayers Overlaid on NiOx or PEDOT:PSS for Tin‐Based Perovskite Solar Cells – An Overview of Recent Characterization Methods

Chemistry – A European Journal, EarlyView.
Successfully applying self‐assembled monolayers with hole‐selectivity for lead‐free tin perovskite solar cells requires judicious investigation with appropriately powerful characterization methods, in addition to efforts in the development of new materials and processing.
Donghoon Song, Seung Wook Shin, Hui‐Ping Wu, Eric Wei‐Guang Diau   +3 more
wiley   +1 more source

Nanoparticles in microdroplets: Recent advances in microfluidic generators for producing functional microbeads

Droplet, EarlyView.
Functional hybrid microbeads with electrical, magnetic, and/or optical responsiveness have emerged as versatile platforms for biotechnology. This review highlights recent advances in microfluidic technologies for producing such microbeads, with a focus on incorporating functional nanoparticles in microdroplet systems.
  Bayinqiaoge, Chengchen Zhang, Shi‐Yang Tang   +2 more
wiley   +1 more source

Isoelectronic Alloying in Zintl Phases Mediated the Avoided Crossing and Phonon Softening

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
A small amount of Hf doping endows Zr3Ni3Sb4‐Zintl with an unusually low thermal conductivity far exceeding that of similar systems. Two unique phonon mechanisms—avoided crossing and phonon softening—significantly suppress the lattice thermal conductivity. The average thermoelectric figure of merit is improved by 21%.
Zesong Wang, Xiang Wei, Ran Guo, Shun Han, Weihong Gao, Yu‐dong Fu, Zihang Liu   +6 more
wiley   +1 more source

Strong Nonradiative Recombination Induced by Pronounced Lone‐Pair Electron Expression Following Deprotonation in Aziridinium Lead Iodide Perovskites

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
The transition from linear to cyclic organic cations promotes deprotonation and activates VH(N) defects with pronounced lone‐pair electron activity, thereby inducing severe local distortions and highly efficient nonradiative recombination centers. This work unveils a direct structure–defect–performance correlation and proposes design strategies for the
Qingshan Bao, Linyu Bai, Honghe Zhao, Yanting Qin, Xian Zhao, Yanlu Li   +5 more
wiley   +1 more source

Rational design principles for giant spin Hall effect in 5d-transition metal oxides. [PDF]

Proc Natl Acad Sci U S A, 2020
Jadaun P, Register LF, Banerjee SK.
europepmc   +1 more source

Efficient Kesterite Solar Cells via Scalable Doctor‐Blading of 2‐Methoxyethanol‐Based Molecular Ink

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
A new record efficiency of 13.26% has been achieved for doctor‐bladed CZTSSe solar cells, fabricated for the first time from an MOE‐based molecular ink in ambient air. Cu2ZnSn(S,Se)4 (CZTSSe) thin‐film solar cells have garnered significant interest owing to their appealing properties, such as earth‐abundant composition, environmental friendliness, high
Yanmei Deng, Yu Mao, Mengyang Wang, Yuanyuan Huang, Wenjian Chan, Ziyang Ren, Ening Gu, Sambasivam Sangaraju, Xianzhong Lin, Guowei Yang   +9 more
wiley   +1 more source

A trade‐off between efficiency and stability in a class of sky‐blue organic light‐emitting diodes

FlexMat, EarlyView.
OLED efficiency and stability are correlated with device structure using combined experimental and simulation approach. Efficient, but less stable devices suffer mainly from exciton‐exciton annihilation, while their opposites have excitons predominantly quenched by polarons.
Eglė Tankelevičiūtė, Sandra Jenatsch, Beat Ruhstaller, Eli Zysman‐Colman, Ifor D. W. Samuel   +4 more
wiley   +1 more source

Designer Entropy Enables High Thermoelectric Power and Efficiency

Interdisciplinary Materials, EarlyView.
Designer Entropy enables targeted control of defect and transport behavior in SnTe‐based alloys, allowing efficiency and power to be independently optimized. Radius‐matched Sb doping preserves carrier mobility and delivers superior power output, while Bi‐induced disorder suppresses mobility despite comparable efficiency.
Yihua Zhang, Yuxuan Yang, Guyang Peng, Haijun Wu, Zhihao Zhao, Jiandong Wang, Tianle Xie, Yuetao Zhang, Yang Zhang, Wanbo Qu, Tong Song, Minghua Yang, Chuansheng Ma, Shengwu Guo, Jun Sun, Xiangdong Ding   +15 more
wiley   +1 more source

Strong interfacial charge transfer from CrSBr induces extreme hole doping and quantum‐Hall states in graphene heterostructures

InfoScience, EarlyView.
Magnetic van der Waals semiconductors offer unique opportunities to integrate spin and charge degrees of freedom in atomically thin devices. We fabricate dual‐gated heterostructures consisting of exfoliated CrSBr and monolayer graphene with Hall measurement revealing robust heavy p‐doping of graphene and signals of h‐BN/graphene moiré superlattices ...
Ziqi Liu, Yuchen Gao, Chengfeng Zhu, Yichang Sun, Kenji Watanabe, Takashi Taniguchi, Zuxin Chen, Pingfan Gu, Yu Ye   +8 more
wiley   +1 more source