Wei Tian

In Situ Construction of n‐Type SnO x Interlayer by Converting Surface Sn 4+ for Efficient Tin Perovskite Solar Cells

Feng Yang, Yang Yang, Kun Wang, Jingyuan Tian et autres

ABSTRACT Tin perovskites are promising lead‐free candidates for perovskite solar cells (PSCs), yet their practical application is hindered by the facile oxidation of Sn 2+ to Sn 4+ , which induces p‐type self‐doping, defect accumulation, and progressive surface‐to‐bulk degradation. Here, we propose …

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Chiral Perovskite Photonic Synapses With Anion‐Mediated Carrier Relaxation for Enhanced 3D Tracking and Trajectory Reconstruction

Guoyi Li, Y N Wu, Shenghong Li, Wencan Wang et autres

ABSTRACT Circularly polarized light (CPL) provides additional degrees of freedom for visual information processing in artificial photonic synapses (APS). However, achieving carrier dynamics modulation for synaptic behavior conflicts with maintaining the inherent chiral properties of the material. Here, we propose an anion‐mediated …

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A broadband neuromorphic visual sensor based on halide perovskite/sulfide heterostructure for robust day-night spatiotemporal perception

Yuqiu Wu, Guoyi Li, Wei Tian, Wencan Wang et autres

Interfacial Field‐Engineered Perovskite/Silicon Bipolar Photodiodes with Wavelength‐Tunable Polarity for Dual‐Channel Encrypted Optical Communication

Wangyin Han, Wencan Wang, Shuai Zou, Chengkun Wu et autres

ABSTRACT Bipolar photodiodes that generate opposite photocurrent polarities at different wavelengths offer an attractive device‐level route toward secure optical communication, yet their practical use is hampered by limited design generality and fixed spectral switching points. Here, we report a self‐powered perovskite/silicon tandem …

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Fabrication of water-resistant and high-temperature-tolerant adhesives through synergistic bionic strategy to achieve balanced adhesion and cohesion

Wei Tian, Jiajia Deng, Jing Zheng, Zhongrong Zhou

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Tunable Bipolar Perovskite Photodiodes Enabled by Electric Field Flipping for Secure Optical Communication

Wencan Wang, Wei Tian, Jianyuan Wang, Wei Zhai et autres

The wavelength-dependent positive and negative responses make bipolar photodiodes essential for applications in sensing, secure communication, and imaging systems. However, existing bipolar photodiodes typically rely on tandem light-absorbing layers or the synergy of multiple physical effects, leading to complex architectures and limited …

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Recent Progress in Oxide Interface‐Based Two‐Dimensional Electron Gas Systems: Conventional Devices and Emerging Hybrid Applications

Fan Li, Fei Wang, Hao Lu, Run Zhao et autres

ABSTRACT 2D electron gas (2DEG) systems formed at oxide interfaces have attracted significant attention due to their unique properties, including high carrier mobility, strong spin‐orbit coupling (SOC), and 2D superconductivity. These systems, especially those based on SrTiO 3 (STO), KTaO 3 (KTO), …

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Enhanced wear and corrosion resistance properties by GO@SiO2 in-situ polymerized nanoparticles in electrodeposited nickel-base composite coatings

Yan Zhang, Farong Gu, Wei Tian, Heng Cui et autres

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Flexible and Self-Supporting Si-Based Photodetector with Fast Response Speed for Visible Light Communication

Yuchen Wu, Hao Ni, Ziyi Tian, Zihan Zhao et autres

Si-based photodetectors (PDs), commonly used as optical receivers in visible light communication (VLC) systems, generally lack flexibility and face a dilemma between responsivity-response speed. This study reports a flexible Si/SnO 2 heterojunction by conformally coating a SnO 2 thin film on the …

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All‐Optical Controlled Neuromorphic Vision Sensor for High‐Accuracy Image Recognition

Guoyi Li, Xuanyu Shan, Zhongqiang Wang, Shenghong Li et autres

Abstract As a disruptive design in brain‐like computing, event‐driven neuromorphic visual sensors are highly dependent on the synergistic effect of optical and electrical stimulation. However, it is a challenge to achieve bidirectional positive–negative reconfigurable changes of synaptic weights by all‐optical regulation without …

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Synergistic Treatments of Bulk and Buried Surface in Tin‐Lead Binary Perovskite for Efficient Near‐Infrared Photodetectors

Yi Wu, Shenghong Li, Jahangeer Ahmed, Wei Tian et autres

Abstract Tin‐lead binary perovskites, with their low bandgap and high absorption coefficient, hold great potential for application in near‐infrared (NIR) photodetectors. However, uncontrolled crystallization and a high defect density at the interface, particularly at the buried interface, significantly hinder their performance enhancement. …

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Conductive polymer modified β-FeOOH loaded onto BiVO4 for enhanced photocorrosion inhibition and photoelectrochemical performance

Xianhong He, Wei Tian, Jahangeer Ahmed, Zhengyu Bai et autres

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