ADVANCED MATERIALS
·
2023
·Vol. 35
·期 22
·2210611
·
IF 29.4
Mengyu Guan,Yunlong Xie,Yang Zhang,Zixin Gu,Lei Qiu,Zhuojie He,Bingkun Ye,Ady Suwardi,Zhigao Dai,Guogang Li,Guangwei Hu
Humidity- and moisture-induced degradation has been a longstanding problem in perovskite materials, affecting their long-term stability during applications. Counterintuitively, the moisture is leveraged to tailor the reversible hydrochromic behaviors of a new series of 2D Dion–Jacobson (DJ) perovskites for reconfigurable optoelectronics. In particular, the hydrogen bonds between organic cations and water molecules can be dynamically modulated via moisture removal/exposure. Remarkably, such modulation confines the movement of the organic cations close to the original position, preventing their escape from crystal lattices. Furthermore, this mechanism is elucidated by theoretical analysis using first-principles calculations and confirmed with the experimental characterizations. The reversible fluorescent transition 2D DJ perovskites show excellent cyclical properties, presenting untapped opportunities for reconfigurable optoelectronic applications. As a proof-of-concept demonstration, an anti-counterfeiting display is shown based on patterned reversible 2D DJ perovskites. The results represent a new avenue of reconfigurable optoelectronic application with 2D DJ perovskites for humidity detection, anti-counterfeiting, sensing, and other emerging photoelectric intelligent technologies.
研究领域:
材料科学
·
光电子学
·
纳米技术
✓ 已验证
DOI
高影响因子
ADVANCED MATERIALS
·
2015
·Vol. 27
·期 35
·5176-5183
·
IF 17.493
Liu Y,Yang Z,Cui D,Ren X,Sun J,Liu X,Zhang J,Wei Q,Fan H,Yu F,Zhang X,Zhao C,Liu SF.
Two-inch-sized perovskite crystals, CH3 NH3 PbX3 (X=I, Br, Cl), with high crystalline quality are prepared by a solution-grown strategy. The availability of large perovskite crystals is expected to transform its broad applications in photovoltaics, optoelectronics, lasers, photodetectors, LEDs, etc., just as crystalline silicon has done in revolutionizing the modern electronics and photovoltaic industries.
研究领域:
材料科学
·
光电子学
·
光伏技术
·
晶体生长
·
半导体物理
✓ 已验证
DOI
PubMed
高影响因子
ACS Sustainable Chemistry & Engineering
·
2020
·
IF 7.632
Yan Jiang,Zehai Wang,Xiuyu Liu,Qiang Yang,Qin Huang,Lijun Wang,Yi Dai,Chengrong Qin,Shuangfei Wang
Lignocellulosic-biomass-derived transparent nanopaper is an emerging substrate or functional component for next-generation green optoelectronics. The fabrication of such transparent nanopaper typically needs the delignification of lignocellulose; however, delignification not only is environmentally unfriendly but also impairs the nanopaper properties such as water stability and UV-shielding capacity. In this study, we present a green and facile lignin modification method instead of delignification to fabricate transparent nanopaper from agro-industrial waste with the combined intriguing properties of lignin and cellulose. Because lignin modification selectively removes chromophores without affecting the bulk lignocellulosic structures, the as-prepared lignocellulose nanopaper (LNP) achieved a comparable optical transmittance (∼90%) but superior UV-blocking ability and haze (∼46%) compared with previously reported cellulose (or delignified) nanopaper. The well-preserved lignin structures endowed the transparent LNP with a low surface energy and a small mesoporous size and volume. In addition to a high thermal stability, the transparent LNP exhibited excellent water stability, evidenced by an up to 103° initial water contact angle, a low equilibrium water absorption (<60 wt %), and a high wet mechanical strength (nearly 40% tensile strength and 92% toughness retained in the wet state). Furthermore, we fabricated a GaAs solar cell with the transparent LNP as an advanced light-management layer that leads to significantly improved power conversion efficiency, even under damp conditions. This work sheds light on the conversion of agro-industrial waste to nanopaper with desirable performances for optoelectronics and brings us a step closer toward the scalable production and application of LNP.
研究领域:
材料科学
·
环境科学
·
光学工程
✓ 已验证
DOI
高影响因子
Science China-Materials
·
2024
·Vol. 67
·期 4
·1340-1347
·
IF 6.8
Cao Mengyan,Li Renfu,Li Zhilin,Zhao Xiujian,Gong Xiao
Perovskite crystals with high photoluminescence quantum yields can be rapidly synthesized by doping Mn 2+ into Cs 2 ScCl 5 ·H 2 O through a facile wet chemistry approach. The quantum yield of the Mn 2+ -doped perovskite crystals in the red light region is over 12 times higher than that of the host material and nearly 24 times higher than that of pure Mn-based perovskite CsMnCl 3 ·2H 2 O. Moreover, density functional theory calculations were used to study the orbital hybridization properties of the materials to further investigate their optical properties. After Mn 2+ doping, the Mn octahedrons separated by the Sc octahedrons can more effectively restrict excitons, which is conducive to the improvement of quantum yields. Compared with the original band gap, a new hybridized orbital attributed to Mn and the host element appears. The doped sample shows an extended absorption and excitation range from the original deep-ultraviolet (UV) absorption to UV and visible absorption. Based on these properties, the Mn 2+ -doped perovskites are used to prepare efficient white light-emitting diodes excited by a blue chip, showing an excellent color rendering index of 91, which meets the need for future applications in the field of optoelectronics.
研究领域:
材料科学
·
光电子学
·
无机化学
·
固体物理
·
纳米技术
✓ 已验证
DOI
高影响因子
ACS Sustainable Chemistry & Engineering
·
2020
·
IF 7.632
Yang Yang,Wencong Liu,Quanbo Huang,Xinsheng Li,Hao Ling,Junli Ren,Runcang Sun,Jianhua Zou,Xiaohui Wang
There is growing interest in the development of “green” electronics fabricated from “natural” materials, which could lead to renewable, sustainable, and potentially inexpensive organic optoelectronics. In this paper, a novel, facile, and full-solution processed approach has been successfully demonstrated to fabricate a highly flexible and conductive paper electrode by electroless deposition with dopamine molecules as an adhesion layer on newly hybrid paper. The novel paper substrate was prepared through a simple hot-press process with commercial paper and polypropylene (PP) film. It has a smooth surface and improved mechanical properties. Importantly, it is flexible and highly resistant to water, which are important for solution processes. The obtained highly conductive paper exhibited a smooth and hydrophobic surface with high reflection. In addition, these conductive papers also showed excellent mechanical flexibility and stability, indicating the strong adhesion between the metal and hybrid paper, which facilitates the roll-to-roll process of the device. As a possible application, this paper electrode can be effectively used as a mechanical support and an electrode in an organic light-emitting diode (OLED), showing potential possibilities in future electronics.
研究领域:
材料科学
·
电子工程
✓ 已验证
产品关联
DOI
高影响因子
ACS Materials Letters
·
2021
·
IF 8.312
Jiaxue Zhang,Qianying Lu,Yanyan Li,Tingyu Li,Ming-Hui Lu,Yan-Feng Chen,Desheng Kong
Stretchable optoelectronics represent an emerging technology featuring soft mechanical properties. The advancements in this active area rely on the development of compliant electronic materials. Currently, the deformable forms of light-emitting devices often exhibit double-side emissions due to the lack of stretchable reflective electrodes. This study reports a facile procedure to deposit smooth and uniform liquid metal films over large-area elastomeric substrates as stretchable reflective electrodes. The as-prepared electrodes exhibit low sheet resistance (0.15 Ω sq–1), high optical reflectance (95% at 550 nm), and ultrahigh deformability (500% strain). The electrode shows sufficient durability to survive repetitive tensile deformations. Successful implementation of a liquid metal electrode in a stretchable light-emitting device achieves single-side emission with enhanced light extraction. The stretchable reflective electrode reported here represents a key building component to enable a broad range of applications such as deformable lighting, wearable displays, and soft robotics.
研究领域:
材料科学
·
光电子学
·
可穿戴技术
·
软体机器人
✓ 已验证
DOI
高影响因子
Journal of Materials Chemistry C
·
2025
·
IF 5.1
Shilin Liu,Jixi Zhou,Yijing Ding,Xianyu Zhao,Qing Li,Zhong Wu
Halide perovskites have emerged as highly promising materials for light absorption and emission, with significant potential in photovoltaics and optoelectronics. However, unintentional self-doping in solution-processed lead halide perovskite single crystals often degrades photodetector performance. In this study, we present an innovative precursor engineering approach aimed at controlling the self-doping characteristics of perovskite materials by optimizing the stoichiometry of the precursors. By precisely adjusting the PbCl2/MACl (MA = CH3NH3+) ratio, we achieved remarkable enhancements in MAPbCl3 single crystal performance. The crystal with a PbCl2/MACl molar ratio of 0.85 exhibited exceptional properties, including a high resistivity (2.7 × 108 Ω cm), outstanding carrier mobility (116.1 cm2 V−1 s−1), and ultralow trap state density (9.03 × 108 cm−3). Additionally, the fabricated MAPbCl3 single crystal ultraviolet photodetector (vertical architecture) demonstrated a high responsivity of 105 mA W−1 at 365 nm, with ultrafast response speed (rise time: 38.2 μs, fall time: 61.4 μs), surpassing all previously reported MAPbCl3 single crystal-based devices. These results highlight the superior quality of the optimized crystals, demonstrating their potential for use in high-performance optoelectronics and advancing perovskite integration into next-generation photonic and electronic technologies.
研究领域:
材料科学
·
光电子学
·
半导体物理
·
纳米技术
·
光伏技术
✓ 已验证
产品关联
DOI
高影响因子
CRYSTENGCOMM
·
2023
·Vol. 25
·期 15
·2237-2242
·
IF 3.1
Cunxin Li,Kaijia Xu,Lanjun Cheng,Zhichuan Wu,Yinyin Qian
Group I–V–VI2 nanocrystals have been considered as potential candidates in the field of optoelectronics due to their highly tunable semiconductor characteristics. AgSbTe2, one of the emerging group I–V–VI2 nanocrystals with optical phase-change properties, a high light absorption coefficient and wide spectral response, is attractive for eco-friendly photodetector devices. However, a colloidal synthetic route for obtaining highly crystalline AgSbTe2 nanocrystals with low toxicity precursors, which is vital to high-performance solution-processed photodetector devices, is still rare. Herein, we investigate the colloidal synthesis of quasi-cube AgSbTe2 nanocrystals from the reaction of commercially available AgNO3 with Sb(Ph)3 in oleylamine at 190 °C, followed by the injection of a tellurium source, which was prepared by directly dissolving TeO2 in 1-dodecanethiol. Simple AgSbTe2/ITO heterostructure photodetectors were fabricated by a low-temperature colloidal synthetic route in combination with the spin-coating technique, which exhibit good photoresponse in a wide range from 405 to 980 nm with fast response times (0.49 and 0.58 s) and excellent stability. This work suggests that ternary silver-based I–V–VI2 compound nanostructures have great potential for high-performance optoelectronic applications.
研究领域:
材料科学
·
纳米技术
·
光电子学
✓ 已验证
产品关联
DOI
高影响因子
Nano-Micro Letters
·
2024
·Vol. 16
·期 1
·1-16
·
IF 31.6
Wang Wenxiao,Wang Yaqi,Yin Feifei,Niu Hongsen,Shin Young-Kee,Li Yang,Kim Eun-Seong,Kim Nam-Young
An optoelectronic memristor with bioinspired neuromorphic behavior was proposed based on Ag/TiO 2 Nanowires: ZnO QDs/FTO.
The proposed device establishes superior long/short-term synaptic plasticity in response to electrical and light stimuli, and a neuromorphic computing task is effectively implemented based on its optoelectronic performance.
The device emulated complex biological associative learning behaviors, including the four features of acquisition, extinction, restoration, and generalization.
研究领域:
材料科学
·
神经科学
·
光电技术
✓ 已验证
DOI
PubMed
高影响因子
ACS Applied Nano Materials
·
2025
·
IF 5.5
Chasina Wang,Fengqing Jiao,Liyuan Zhang,Yishi Wu,Chuanlang Zhan
One of the key issues of lead-free halide double perovskite nanocrystals (DPNCs) is their low photoluminescence quantum yields (PLQYs), and the PLQYs of nondoped pristine DPNCs are currently below 2%, though they can be enhanced via strategies such as ion doping or surface passivation. Herein, we report an organic–inorganic hybrid approach to significantly increase the PLQYs of nondoped pristine DPNCs. With Cs2NaBiCl6 NCs as the model, we selected methylammonium (MA+) and formamidine (FA+) as organic A-site ions and for the first time successfully synthesized the organic–inorganic hybrid in-direct bandgap DPNCs, e.g., MA2NaBiCl6 and FA2NaBiCl6. The PLQYs of the prepared Cs2NaBiCl6, MA2NaBiCl6, and FA2NaBiCl6 are 1.9%, 6.2%, and 15.4%, respectively. The enhancement of PLQYs can be due to the lattice distortion on using the unsymmetric rod-like MA+ and V-like FA+ to replace the symmetric Cs+, which yields faster charge transfer, enhanced excitation, and reduced nonradiative recombination, which are combined to make the self-trapped excited state brighter with significantly enhanced PLQYs. Overall, our results clearly demonstrate that the organic–inorganic hybrid strategy is an effective way to tune the lattice distortion and significantly enhance the emission of nondoped DPNCs, which will open doors for designing functional optoelectronic materials.
研究领域:
材料科学
·
纳米技术
·
光电子学
·
无机化学
·
无机-有机杂化材料
·
半导体纳米晶体
·
光物理
✓ 已验证
产品关联
DOI
高影响因子
Advanced Science
·
2019
·Vol. 6
·期 22
·1901694
·
IF 15.804
Xuan Lu,Yang Hu,Jiazhuang Guo,Cai-Feng Wang,Su Chen
All-inorganic halide perovskite nanocrystals (PNCs) have drawn increasing attention owing to their splendid optical properties. However, such nanomaterials suffer from intrinsic instability, greatly limiting their practical application. Meanwhile, environmental regulation has restricted the emissions of volatile organic compounds (VOCs), initiating a search for alternative approaches to PNC synthesis and film forming. Herein, fiber-spinning chemistry (FSC) is proposed for easy-to-perform synthesis of highly stable PNC fibrous films. The FSC process utilizes spinning fibers as reactors, reducing the generation of VOCs. This method enables the fabrication of CsPbX 3 (X = Cl, Br, I) PNCs/poly(methyl methacrylate)/thermoplastic polyurethanes fibrous films at room temperature in one step, exhibiting tunable emission between 450 and 660 nm. Significantly, the in situ generation of PNCs in hydrophobic core–shell nanofibers results in highly improved fluorescence stability. PNCs/polymer fibrous films keep constant in photoluminescence (PL) after storage at atmosphere for 90 d and retain 82% PL after water immersion for 120 h (vs fluorescence quenching in 10 d in air or 5 h in water for pristine PNCs). The PNCs/polymer fibrous films endowed with superior optical stability and great flexibility show promising potentials in flexible optoelectronic applications. This work paves a facile way toward high-performance nanoparticles/polymer fibrous films.
研究领域:
材料科学
·
纳米技术
·
光电子学
·
化学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Applied Nano Materials
·
2025
·
IF 5.5
Zhifan Wang,Mengmeng Dai,Gang Yang,Xiao Zhang,Pengchao Shen,Chunxiang Zhao,Yongsheng Zhu
Perovskite nanocrystals have gained considerable attention owing to their outstanding photoluminescence and photodetection performance in various applications. However, the rigorous preparation conditions and lead toxicity of most lead halide perovskite nanocrystals still hamper practical application, which achieves efficient deep-red and near-infrared (NIR) emission also meeting the challenge. Herein, sub-25 nm Cl–-doped lead-free CsMnBr3 nanocrystals (NCs) were prepared via a moderate hot-injection method at room temperature and the resulting NCs showcased excellent photoluminescence property with reduced impurities. Furthermore, a substantial enhancement in photoluminescence quantum yield (PLQY) from 54.20% to 78.05% was achieved by manipulating the Cl– doping concentration, which is attributed to the weakened nonradiative recombination pathways induced by Cl–-mediated defect passivation. Consequently, we fabricated photoluminescent light-emitting diodes (LEDs) based on Cl–-doped CsMnBr3 nanocrystals and achieved NIR emissions of Nd3+, Yb3+, and Er3+ ions. These results reveal that Cl–-doped CsMnBr3 perovskites NCs can not only be facilely prepared via a simple room-temperature synthesis, but also demonstrate promising potential in various areas such as photoluminescent LEDs and near-infrared optoelectronic devices.
研究领域:
材料科学
·
纳米技术
·
光电子学
·
光子学
·
半导体物理
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）