Results 61 to 70 of about 118,273 (367)

Charge Generation and Recombination Pathways in All‐Polymer Bulk Heterojunction Solar Cells

Advanced Functional Materials, EarlyView.
Multimodal spectroscopy and device analysis reveal how field‐dependent charge generation, transport limitations, and non‐geminate recombination govern performance losses in all polymer solar cells. The results identify the key processes controlling charge extraction and recombination, providing insights for the design of more efficient all‐polymer ...
Shahidul Alam, Wejdan Althobaiti, Safakath Karuthedath, Christopher E. Petoukhoff, Amr Dahman, Khawla Alkhezaim, Oleksandr Matiash, José P. Jurado, Mariia Ferree, Ning Su, Jacob Blaskovits, Denis Andrienko, Vladimir Dyakonov, Andreas Sperlich, Vojtech Nádaždy, Tobin J. Marks, Antonio Facchetti, Frédéric Laquai   +17 more
wiley   +1 more source

Enhanced NO₂ Sensing Performance of ZnO-SnO₂ Heterojunction Derived from Metal-Organic Frameworks

Nanomaterials, 2022
Nitrogen dioxide (NO2) is the major reason for acid rain and respiratory illness in humans. Therefore, rapid, portable, and effective detection of NO2 is essential. Herein, a novel and simple method to construct a ZnO-SnO2 heterojunction is fabricated by
Xiaowei Ren, Ze Xu, Zhongtai Zhang, Zilong Tang   +3 more
doaj   +1 more source

Heterojunction-Induced Local Charge Redistribution Boosting Energy-Saving Hydrogen Production via Urea Electrolysis [PDF]

Substituting the oxygen evolution reaction by the urea oxidation reaction (UOR) is thermodynamically more favorable for energy-saving hydrogen production.
Yi Zhang (9093), Xin Li (51274), He Zeng (17993943), Zhanhong Zhao (17993940), Xinghua Chang (3235845), Kuixin Cui (17993946), Haoran Ding (2801863)   +6 more
core   +1 more source

Interface‐Defect Synergy Engineering of Amorphous Ga2O3 for Voltage‐Tunable Dual‐Mode Optoelectronic Devices: Self‐Powered Imaging and Neuromorphic Vision

Advanced Functional Materials, EarlyView.
An interface‐defect co‐engineered strategy enables bias‐programmable integration of self‐powered photodetection and low‐power synaptic functionalities within a single‐material amorphous Ga2O3 device. This design achieves reversible switching via voltage modulation, supporting high‐contrast imaging and visual memory, and demonstrates a neuromorphic ...
Wanjun Li, Aijiang Yan, Lijuan Ye, Xuanyu Shan, Chunyan Liu, Hong Zhang, Shuren Zhou, Honglin Li, Di Pang, Yan Tang, Guoping Qin, Zhongqiang Wang, Peng Yu, Zhenxiang Cheng   +13 more
wiley   +1 more source

Bismuth‐Based Photocatalysts for Water Remediation: Design Strategies, Mechanisms, and Challenges

Advanced Functional Materials, EarlyView.
This review highlights representative design strategies for bismuth‐based semiconductor photocatalysts in solar‐driven water purification. Emphasis is placed on electronic structure regulation, oxygen‐vacancy engineering, and interfacial coupling to enable efficient full‐spectrum light utilization, improved charge separation, and selective oxidation in
Shan Liu, Yi Zhao, Liming Cai, Simin Long, Jing Kang, Jingkai Lin, Jimin Shen, Zhonglin Chen, Shaobin Wang, Huayang Zhang   +9 more
wiley   +1 more source

High temperature and trap sates characterization of Al0.35Ga0.65N/GaN/Al0.25Ga0.75N double heterojunction

Results in Physics, 2022
In this work, the high temperature and trap sates characteristics have been investigated for Al0.35Ga0.65N/GaN/Al0.25Ga0.75N double heterojunction. By using high-Al AlGaN barrier and back barrier layers, the maximum current at 200 ℃ is reduced by 35 ...
Shenglei Zhao, Bo Mei, Yi Sun, Shuang Cao, Yachao Zhang, Dan Zhu, Jincheng Zhang, Yue Hao   +7 more
doaj   +1 more source

Self-Powered Broadband (UV-NIR) Photodetector Based on 3C-SiC/Si Heterojunction [PDF]

, 2019
Self-powered photodetectors (PDs) are highly desirable for many applications, ranging from smart cities to optical communications. Herein, we report on a selfpowered broadband [UV to near-infrared (NIR)] PD based on a single-crystalline SiC (100)/Si (100)
Tanner, Philip, Foisal, Abu Riduan Md, Dao, Dzung Viet, Nguyen, Thanh Viet, Streed, Erik W., Lobino, Mirko, Dinh, Toan, Phan, Hoang-Phuong, Nguyen, Tuan-Khoa, Haylock, Ben   +9 more
core   +1 more source

Catalytically Enhanced Near Room‐Temperature Hydrogen Sensing Using Pd‐ZnO Colloidal Crystals

Advanced Functional Materials, EarlyView.
Pd‐decorated ZnO colloidal crystal monolayers demonstrate excellent performance across a wide hydrogen concentration range at 33°C, with high selectivity and reproducible device fabrication. The sensors show strong responses even at low‐ppm H2 concentrations and an ultra‐low detection limit of 82 ppb, indicating their suitability for diverse hydrogen ...
Hamidah Alluhaybi, Samuel J. Ippolito, Chung Kim Nguyen, Durairaj Mahendiran, Michelle J. S. Spencer, Edwin L. H. Mayes, Billy James Murdoch, Jason Choi, Shamali De Silva, James Tardio, Adrian Trinchi, Ahmad E. Kandjani, Mohammad Al Kobaisi, Ylias Sabri   +13 more
wiley   +1 more source

Carbon Nanodots as a Potential Transport Layer for Boosting Performance of All-Inorganic Perovskite Nanocrystals-Based Photodetector

Crystals, 2021
A low-cost and simple drop-casting method was used to fabricate a carbon nanodot (C-dot)/all-inorganic perovskite (CsPbBr3) nanosheet bilayer heterojunction photodetector on a SiO2/Si substrate.
Hassan Algadi, Ahmad Umar, Hasan Albargi, Turki Alsuwian, Sotirios Baskoutas   +4 more
doaj   +1 more source

Leakage Current Mechanisms in SiGe HBTs Fabricated Using Selective and Nonselective Epitaxy [PDF]

, 2001
SiGe heterojunction bipolar transistors (HTBs) have been fabricated using selective epitaxy for the Si collector, followed in the same growth step by nonselective epitaxy for the p+ SiGe base and n-Si emitter cap.
Ashburn, Peter, Lamb, Andrew C., Bonar, J.M., Cristiano, Fuccio, Bonar, J. M., Hemment, P. L. F., Schiz, J. F. W., Hemment, Peter L. F., Hall, Stephen, Schiz, J.F.W.   +9 more
core