Sergio Gámez‐Valenzuela

Additive‐Free, Efficient, and Stable All‐Polymer Solar Cells Enabled by Congeneric Molecule Construction for Integrated Solar‐Storage Applications

Henan Li, Suxiang Ma, Sergio Gámez‐Valenzuela, Zhiyu Yang et autres

ABSTRACT Organic solar cells are attractive for wearable electronics, in particular, all‐polymer solar cells (all‐PSCs) offer superior intrinsic stability and higher output voltage, enabling direct matching with the energy storage and conversion systems. However, all‐PSCs typically suffer from disordered morphology and poor …

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Additive‐Free, Efficient, and Stable All‐Polymer Solar Cells Enabled by Congeneric Molecule Construction for Integrated Solar‐Storage Applications

Henan Li, Suxiang Ma, Sergio Gámez‐Valenzuela, Zhiyu Yang et autres

ABSTRACT Organic solar cells are attractive for wearable electronics, in particular, all‐polymer solar cells (all‐PSCs) offer superior intrinsic stability and higher output voltage, enabling direct matching with the energy storage and conversion systems. However, all‐PSCs typically suffer from disordered morphology and poor …

cn, Afrique du Sud, in, kr, ru, fr (code pays fourni par la source)

Towards single-crystalline two-dimensional poly(arylene vinylene) covalent organic frameworks

Shaik Ghouse, Ziang Guo, Sergio Gámez‐Valenzuela, David Mücke et autres

Abstract Vinylene-linked two-dimensional (2D) conjugated covalent organic frameworks, or 2D poly(arylene vinylene)s (2D PAVs), are promising polymer semiconductors for (opto-)electronics, photocatalysis and electrochemistry. However, conventional solvothermal synthesis often produces 2D PAVs that are poorly crystalline or difficult to access. Here we introduce …

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Linear push–pull chromophores with tunable acceptor strength for organic opto-electronics

Dennis Großmann, David Gepperth, Sergio Gámez‐Valenzuela, Irene Badia Domínguez et autres

This work focuses on the influence of the electron-withdrawing character of acceptor units on both the molecular and macroscopic properties of thiophene (T)-bridged push-pull donor–π–acceptor chromophores with tetrahydroquinoline (TQ) as donor.

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n-doping of organic semiconductors catalysed by organometallic complexes

Sergio Gámez‐Valenzuela, Jianfeng Li, Kui Feng, Bin Liu et autres

Molecular doping is essential for optimizing carrier concentration, charge mobility, and energy levels of organic semiconductors (OSCs), thereby enhancing device performance. However, efficient n(electron)-type doping remains challenging, as conventional techniques often fail to achieve high doping efficiency with minimal counterion-induced disorder under …

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Cyanothiophene-Flanked Diketopyrrolopyrrole: A New Electron-Deficient Building Block for Unipolar n-Type Polymer Semiconductors

Peng Wang, Sergio Gámez‐Valenzuela, Yanlin Wei, Jong Bin Park et autres

Developing high-performance n-type polymer semiconductors depends on the design and synthesis of strongly electron-deficient units with optimized physicochemical properties. Here, we report a novel diketopyrrolopyrrole derivative ( CTDPP ) by integrating electron-withdrawing cyano groups into the benchmark thiophene-flanked DPP ( TDPP ). …

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One-Step Synthesis of Cyanated Quinoxaline Regioisomers Enables n-Type Polymers with Record Ambient-Processed Thermoelectric Performance

Sergio Gámez‐Valenzuela, Suxiang Ma, Yanlin Wei, Yani Lu et autres

Advancements in organic electronics critically depend on the development of high-performance n-type π-conjugated polymers. However, electron-depleted polymers of this kind exhibiting facile synthesis, excellent processability and good air stability remain rare due to limitations in accessing building blocks meeting these requirements. Here …

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Backbone Tailoring Enables High‐Performance and Stable n‐Type Organic Mixed Ionic‐Electronic Conductors for Synaptic Simulation and Biosensor

Wanli Yang, Suxiang Ma, Sergio Gámez‐Valenzuela, Sang Young Jeong et autres

Abstract High‐performance and stable n‐type organic mixed ionic‐electronic conductors (OMIECs) are crucial for advancing organic electrochemical transistors (OECTs)‐based low‐power complementary circuits and biosensors, yet their development remains a great challenge. Herein, the study presents a series of donor‐acceptor polymers incorporating bithiophene (BTI) …

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Facile One-Pot Direct Arylation Synthesis of Crystalline Additive Molecules for High-Efficiency Organic Solar Cells

Jiayu Li, Yuechen Li, Minghui Wang, Sergio Gámez‐Valenzuela et autres

Crystalline molecules (CMs) demonstrate tremendous potential in regulating the active layer morphology of organic solar cells (OSCs) through robust intermolecular interactions and the formation of highly ordered crystalline domains. As additives, CMs can effectively balance the crystallinity differences between polymers and small …

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Cyano-Functionalized Thienylthiazole Imide-Based n-Type Polymers for High-Performance Organic Electronics

Yongchun Li, Sergio Gámez‐Valenzuela, Wanli Yang, Riqing Ding et autres

Designing and synthesizing building blocks with strong electron deficiency, planar backbone, and good solubility remains a great challenge in developing n-type polymers with high electron mobility and efficient n-doping capability. Here, we report a novel cyano-functionalized thienylthiazole imide (TzICN), designed by integrating …

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High‐Molecular‐Weight Polymer Donors Based on Bithiophene Imide for High‐Efficiency and Durable All‐Polymer Solar Cells (Adv. Mater. Technol. 12/2025)

Jie Yang, Changjing Xu, Sergio Gámez‐Valenzuela, Qingqing Bai et autres

All-Polymer Solar Cells In article number 2500148, Bin Liu, Sang Young Jeong, Xugang Guo, and co-workers develop a series of bithiophene imide (BTI)-based polymer donors with high number-average molecular weights ranging from 120.3 to 145.5 kDa, offering improved molecular aggregation property and …

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Inside Back Cover: A Simple Quinoid Building Block for Polymer Semiconductors with Tunable Polarity and High n‐Type Thermoelectric Performance (Angew. Chem. 28/2025)

Weipeng Sun, Sergio Gámez‐Valenzuela, Xiage Zhang, Jin‐Woo Lee et autres

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