Yaowu He

Cross-Scale Mixed Conduction in Organic Electrochemical Transistors: From Nanoscale Ion–Electron Coupling to Biointegrated Intelligence

Zhenyuan Mei, Yaowu He, Hong Fu Meng

Abstract Organic electrochemical transistors (OECTs) are emerging at the convergence of nanoscience, soft materials, and bioelectronics because they couple the ionic signals of living systems with amplified electronic readout through hydrated organic mixed ionic–electronic conductors (OMIECs). Their performance, however, is governed not …

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Molecular Valve Engineering Enables Uniform and Low‐Emission Electrochromic Smart Windows

Zhenyuan Mei, Zizheng Tong, Zijin Xu, Chunyu Xu et autres

ABSTRACT Electrochromic smart windows hold great promise for energy‐efficient buildings, yet they often suffer from non‐uniform electrochemical doping and undesirable light emission under strong illumination. Here, we report a molecular valve engineering strategy by incorporating photoresponsive side chains into conjugated polymers to …

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Ultrafast Electrochromic Flexible Displays via Solvent‐Induced Porous and Loosely Packed Films

Zizheng Tong, Hongyang Li, Zijin Xu, Yaowu He et autres

Electrochromic devices (ECDs) represent one of the promising application areas of organic electrochromic materials, offering advantages such as low power consumption and nonemissive operation based on ambient light modulation. However, current electrochromic materials typically exhibit limited response speeds, which still pose a …

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Ultraviolet-ozone tuned organic-inorganic interface for high-performance PbS quantum dot short-wave infrared photodetectors

Jun Han, Feng Ning, Chuan Wei, Li Yan et autres

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Bright‐and‐Cool Smart Windows: Visually Silent and Near‐Infrared Modulation via Quinoid Donor–Acceptor Polymers

Siqin Sun, Yu Cai, Xiaopeng Zhang, Hui Li et autres

ABSTRACT Smart window technologies require precise control of solar heat gain without sacrificing daylight quality. However, most electrochromic materials intrinsically couple near‐infrared (NIR) attenuation with visible light absorption, leading to undesired dimming. Herein, we report a quinoid donor–acceptor polymer, P(EDOT–TQ–EDOT–ProDOT), that achieves …

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Broadband Visible‐Near‐Infrared Electrochromism in Fluorene‐Bridged Viologens for Energy‐Efficient Smart Windows

Zhenyuan Mei, Zijin Xu, Zizheng Tong, Yu Cai et autres

ABSTRACT Broadband regulation of solar radiation in both visible and near‐infrared (VIS–NIR) regions is critical for reducing building energy consumption. However, achieving strong dual‐band absorption within a single electrochromic component remains challenging for conventional viologen systems. Herein, fluorene‐bridged viologen derivatives (FBV‐Et and …

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Triarylamine-based electrochromic materials: From design to multifunctional devices

Yutong Zhang, Yaowu He, Hong Fu Meng

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Sustainable ether electrolyte engineering for all-climate and durable viologen electrochromic devices

Yingda Zhang, Tianhe Xu, Qilin Zhang, Lintao Zeng et autres

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Smart energy-saving windows enabled by transparent-to-black ultra-low voltage polytriphenylamines

Hongyang Li, Yaowu He, Dongwen Zou, Meili Xu et autres

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All-in-One Complementary Electrochromism for Ultra-Stable Broadband Smart Windows

Yu Cai, Zizheng Tong, Dongwen Zou, Hongyang Li et autres

We report a broadband, high-contrast electrochromic system based on two newly designed triphenylamine (TPA) derivatives, NMTPDA and MMTPDA, bearing electron-withdrawing and electron-donating substituents. These substituents modulate the HOMO–LUMO energy levels and stabilize oxidized radical cations, enabling efficient charge transfer and spectral tuning. …

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Backbone‐Integrated UV‐Absorbing ECPs: Synergistic UV Shielding and High‐Efficiency Electrochromism for Ultra‐Stable Outdoor ECDs

Yu Cai, Yaowu He, Yanan Zhu, Hong Fu Meng

Abstract Electrochromic polymers (ECPs) face significant challenges related to ultraviolet (UV)‐induced degradation in outdoor applications. To address this issue, a molecular engineering strategy is presented that covalently integrates the classical UV absorber 2‐(2H‐benzotriazol‐2‐yl)phenol (BTA) into the conjugated backbone of a thiophene‐based ECP. …

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All-Solid-State Transparent-to-Black Electrochromic Smart Window for Building Energy Saving

Hongyang Li, Xiaopeng Zhang, Meimei Zhu, Dongwen Zou et autres

All-solid-state electrochromic devices (ECDs) demonstrate significant potential for smart window applications through the voltage-regulated modulation of solar radiation transmittance. Current implementations remain constrained by insufficient optical contrast, resulting in suboptimal solar heat gain coefficients. In this study, we present a molecular engineering …

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