Article
Chemistry, Multidisciplinary
Jisu Yoo, Subin Ha, Gwang Heon Lee, Yaewon Kim, Moon Kee Choi
Summary: This study presents a stretchable high-resolution multicolor synesthesia display that can generate synchronized sound and light. The display is transfer-printed to enhance optical performance and fine sound pressure level. The inherent stretchability of the device enables stable operation under deformation without sound distortion. The display is demonstrated for visual-acoustic encryption and multiplex quick response code applications.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Changbin Zhao, Biao Yang, Muhammad Umair Ali, Yiqian Zhao, Chaohong Zhang, Yongming Yin, Ming Liu, Chaoyi Yan, Hong Meng
Summary: By doping wide-spectrum yellow photoluminescent phosphor into the blue electroluminescent emissive layer, a high brightness and chromatic-stable white ACEL device is fabricated in this study. The optimized device achieved a maximum brightness of 3150 cd m(-2) with stable chromaticity, showing potential for applications in wearable optoelectronics. Additionally, the approach demonstrated generality by showing digital display and stretchable white ACEL devices.
ADVANCED MATERIALS TECHNOLOGIES
(2022)
Review
Engineering, Electrical & Electronic
Changming Qu, Yun Xu, Yu Xiao, Shaochun Zhang, Hanyun Liu, Guofeng Song
Summary: ACEL, as a unique display technology, has made significant progress in deformability and brightness, suitable for multifunctional displays and sensing platforms. Flexible ACEL devices are facing great opportunities in the fields of wearable electronics and flexible displays, showing bright prospects for development.
ACS APPLIED ELECTRONIC MATERIALS
(2021)
Article
Chemistry, Physical
Yu Chang, Junlu Sun, Lin Dong, Fuhang Jiao, Shulong Chang, Yong Wang, Juan Liao, Yuanyuan Shang, Weiwei Wu, Yu Qi, Chong-Xin Shan
Summary: In this study, a self-powered self-healing multi-color display was developed by integrating intrinsically stretchable multi-color alternating current electroluminescent devices with triboelectric nanogenerators. The use of stretchable and self-healing PDMS as the substrate and matrix material enabled the fabrication of self-powered multi-color ACEL devices. This work provides a promising platform for self-powered communication in the internet of things.
Article
Materials Science, Multidisciplinary
Changbin Zhao, Muhammad Umair Ali, Junpeng Ji, Ming Liu, Aiyuan Li, Junwu Bai, Jingsheng Miao, Tao Wang, Dmitrii F. Perepichka, Chaoyi Yan, Kwang-Fu Clifton Shen, Hong Meng
Summary: Researchers have reported an alternating-current-driven organic light-emitting triode with a simple yet versatile architecture that allows precise control over the color and intensity of light emission. The devices are driven and regulated by a three-phase AC supply, enabling control over the emission from yellow to blue regions through interdigitated electrodes and phase differences. This configuration offers a simplistic approach for color-tunable light emission and shows great potential for full-color displays and solid-state lighting.
ADVANCED OPTICAL MATERIALS
(2021)
Review
Chemistry, Multidisciplinary
Wei Jiang, Seokyeong Lee, Guangtao Zan, Kaiying Zhao, Cheolmin Park
Summary: This review provides a comprehensive overview of the latest developments in stimuli-interactive displays based on alternating current (AC)-driven electroluminescence (EL). It categorizes AC-EL displays by device architectures, discusses state-of-the-art applications, and presents challenges and perspectives for future photo-electronic human-machine interfaces.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Xu Liu, Maoyuan Zhang, Ze Yang, Hao Wang, Jiaqi Chen, Zhaozheng Wang, Yijia Lu, Yibao Chen, Linhong Ji, Jia Cheng
Summary: A novel and feasible technology for lighting up ACEL via triboelectric nanogenerator is proposed, which significantly increases the output voltage of the generator and gets rid of constraints in area, materials, and environmental humidity. This work not only realizes self-powered electroluminescent devices but also improves flexibility and portability for applications in soft robots, functional displays, smart skins, and wearable electronics.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Seokyeong Lee, Eui Hyuk Kim, Seunggun Yu, Hyerim Kim, Chanho Park, Seung Won Lee, Hyowon Han, Wookyoung Jin, Kyuho Lee, Chang Eun Lee, Jihye Jang, Chong Min Koo, Cheolmin Park
Summary: Transparent and flexible MXene electronic devices have been demonstrated by laminating a thin polymer film onto a solution-processed MXene layer, providing high environmental stability even under prolonged air exposure at high temperatures and humidity levels. The resulting polymer-laminated (PL) MXene electrode enables the development of field-driven photoelectronic devices with high transparency and mechanical flexibility, showcasing applications in electroluminescent displays, pressure sensors, and nanogenerators for sensing and energy harvesting.
Article
Nanoscience & Nanotechnology
Shuang Zhao, Jie Zheng, Liu Fang, Yuying Zhang, Liming Zhang, Yanzhi Xia, Yijun Jiang
Summary: A simple green self-assembly method is used to evenly disperse AgNW in water-borne polyurethane, forming an AgNW/WPU conductive nanocomposite film with an asymmetric structure. The film exhibits high strength, high strain, low initial resistance, high conductivity, excellent self-healing, and adhesion.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Review
Materials Science, Multidisciplinary
Yumeng Wang, Xingsheng Li, Yue Hou, Chengri Yin, Zhenxing Yin
Summary: This article outlines the recent progress of stretchable electrodes and their applications, comparing the performance of various stretchable electrodes to show the development challenges in this field.
FRONTIERS OF MATERIALS SCIENCE
(2021)
Article
Physics, Fluids & Plasmas
Jianfei Li, Jingfeng Yao, Chengxun Yuan, Ying Wang, Zhongxiang Zhou, Jingwen Zhang, Anatoly A. Kudryavtsev
Summary: The inverse-brush-electrodes (IBE) structure is designed to investigate the discharge mechanism driven by alternating current (ac). It increases the number of secondary electrons and reduces the breakdown voltage compared to plate electrodes. The breakdown mechanism of gas discharge driven by ac is analyzed, and the negative differential conductivity enhancement effect of the IBE structure in heavy noble gas plasmas is studied. The effect is attributed to the non-equilibrium electron energy distribution function (EEDF) caused by the generation of suprathermal electrons by the IBE structure.
IEEE TRANSACTIONS ON PLASMA SCIENCE
(2023)
Article
Physics, Multidisciplinary
Fei Wen, Guohui Dong, Hui Dong
Summary: In this work, an alternating current version of scanning tunneling microscopy-induced luminescence (STML) is proposed to resolve the fine structures in photon count measurement. By measuring the oscillation of photon count and current, the energy level can be determined, extending the application of STML.
COMMUNICATIONS IN THEORETICAL PHYSICS
(2022)
Article
Engineering, Environmental
Guirong Hu, Changmei Wu, Qian Wang, Fuping Dong, Yuzhu Xiong
Summary: An ultrathin and flexible nanocomposite film with an asymmetric gradient alternating multilayer structure was fabricated, which exhibited improved electromagnetic interference (EMI) shielding performance and mechanical properties. The nanocomposite film had high electrical conductivity and utilized a novel shielding mechanism involving gradient absorption and reflection of electromagnetic waves, resulting in a high EMI shielding effectiveness. The film also demonstrated robust mechanical properties and excellent thermal conductivity.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Materials Science, Multidisciplinary
Yulu Cai, Biao Yang, Junpeng Ji, Fuchang Sun, Yiqian Zhao, Lirong Yu, Changbin Zhao, Manyu Liu, Mingqiang Liu, Yaowu He, Chaohong Zhang, Hong Meng
Summary: A multi-functional tandem device enabled by ionic gels to form a smart glass is reported, which has high and tunable transparency, selective infrared shielding ability, diversified displaying and decoration, excellent stability, and flexibility. Various application scenarios are proposed.
ADVANCED MATERIALS TECHNOLOGIES
(2023)
Article
Chemistry, Multidisciplinary
Yiqian Zhao, Na Yang, Xu Chu, Fuchang Sun, Muhammad Umair Ali, Yuan Zhang, Biao Yang, Yulu Cai, Manyu Liu, Nicola Gasparini, Jiaxin Zheng, Chaohong Zhang, Chuanfei Guo, Hong Meng
Summary: In this study, solvent solketal was used to improve the performance of hydrogels, enabling them to function properly in a wide range of humidity and temperature conditions. The optimized hydrogel demonstrated its unique merits as a dielectric layer in iontronic sensors, with characteristics such as non-leaky ions, high sensitivity, and wide humidity and temperature range applicability. This pioneering work in hydrogel electronics and iontronic sensors will significantly contribute to advancements in these fields.
ADVANCED MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Junwu Bai, Qian Wang, Xing Xing, Junpeng Ji, Muhammad Umair Ali, Ming Liu, Jingsheng Miao, Hongming Chen, Chaoyi Yan, Xiuru Xu, Kwang-Fu Clifton Shen, Hong Meng
Summary: A new type of AC-OLED architecture with coplanar electrodes is demonstrated, which works in a wide voltage and frequency range, emits light throughout the applied AC signal cycle, and exhibits frequency-dependent color tunability. These devices can be efficiently driven by commonly used electric power supplies without additional back-end electronics. The development of highly efficient color-tunable AC-driven lighting sources is expected to be accelerated.
ORGANIC ELECTRONICS
(2023)
Article
Energy & Fuels
Bin Deng, Yanan Zhu, Muhammad Umair Ali, Kun Li, Xingchen Liu, Xinkang Zhang, Jiaoyi Ning, Zhao Hu, Haoliang Chen, Junpeng He, Yaowu He, Hong Meng
Summary: This study investigates a series of pyrrole-based viologen derivatives with narrower bandgaps between the highest occupied molecular orbital (HOMO) and the lowest unoccupied molecular orbital (LUMO) than their parent viologen, BnV. The electrochromic devices containing these derivatives exhibit vivid color change, high optical contrast, and a long lifetime. Additionally, these compounds exhibit unexpected electrofluorochromic behavior, which has potential for encryption-related applications. The findings of this study demonstrate the feasibility of tuning color and electrochemical features and obtaining bifunctional devices through modification of bipyridines with pyrrole moieties and different electronegative substituents.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2023)
Article
Materials Science, Multidisciplinary
Hongming Chen, Miao Lin, Changbin Zhao, Dongwei Zhang, Yang Zhang, Fuhai Chen, Yong Chen, Xin Fang, Qing Liao, Hong Meng, Meijin Lin
Summary: This article introduces a highly efficient organic fluorescent scintillator, which is mixed with CBP to form a large area flexible film for X-ray radiography, exhibiting high spatial resolution and low detection limit. This research provides a new approach for efficient X-ray scintillation and imaging.
ADVANCED OPTICAL MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Maria P. Davydova, Lingqiang Meng, Mariana I. Rakhmanova, Irina Yu. Bagryanskaya, Veronica S. Sulyaeva, Hong Meng, Alexander V. Artem'ev
Summary: Efficient, stable, and low-cost Mn(II) hybrids that exhibit brightly green Mn2+-centered circularly polarized phosphorescence with near-unity PLQY and a high g(lum) factor have been synthesized. These hybrids can be used for UV-pumped circularly polarized light-emitting diodes (LEDs) and X-ray imaging applications, demonstrating their potential as low-cost materials for CPL-LEDs, scintillators, and X-ray imaging.
ADVANCED OPTICAL MATERIALS
(2023)
Article
Energy & Fuels
Ke Lu, Hong Chen, Yu Cai, Xingchen Liu, Yaowu He, Chaoyi Yan, Feng Yan, Zhao Hu, Hong Meng
Summary: In this study, a novel multinitrogen derivative interlayer, Anth-hpp2, was designed and synthesized between the PCBM and top Ag electrode in inverted perovskite solar cells. The superbase group in Anth-hpp2 effectively contacts the silver electrode, reducing the work function of Ag. As a result, the power conversion efficiency of the Anth-hpp2-based device improved from 16.05% to 20.37%, along with enhancements in short-circuit current and fill factor. The stabilities of perovskite solar cells with Anth-hpp2 were also greatly improved.
Article
Engineering, Electrical & Electronic
Qiang He, Xiaopeng Zhang, Teck Lip Dexter Tam, Jianing Wang, Hongming Chen, Sheau Wei Chien, Nguk Neng Tham, Xue Qi Koh, Johnathan Joo Cheng Lee, Ming Lin, Peng Xian Soh, Hong Meng, Wei Huang, Jianwei Xu
Summary: In this study, a new n-type ladder-type conjugated polymer, dichlorinated poly(benzimidazoanthradiisoquinolinedione) (Cl2-BAL), with a slightly twisted polymer backbone and a preferred edge on orientation, was reported. Upon n-doping, its maximum electrical conductivity and power factor in thermoelectric devices reached 1.1 +/- 0.07 S cm-1 and 3.52 +/- 0.37 mu W m-1 K-2, respectively, which is comparable to the best performing ladder-type conjugated polymer BBL. Chlorine atoms not only influence the torsion angle but also the orientation and N-N stacking, significantly affecting the performance as demonstrated by comparing with the previously reported tetrachlorinated analogue Cl4-BAL.
ACS APPLIED ELECTRONIC MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Bin Deng, Yanan Zhu, Xiaowei Wang, Jinlin Zhu, Manyu Liu, Mingqiang Liu, Yaowu He, Caizhen Zhu, Chaohong Zhang, Hong Meng
Summary: This project aims to design a smart window that responds to both electricity and heat, achieving energy efficiency, privacy preservation, and enhanced decorative attributes. By using a novel electrochromic material design and optimizing electrochromic devices, high-performance ECDs with fast color-switching speed and significant transmittance modulation are obtained. Additionally, a thermochromic gel electrolyte is created to provide excellent thermal insulation and further enhance the window's performance. Overall, this work showcases a prospective design pathway for the development of next-generation ultrafast-switching, and energy-efficient intelligent windows.
ADVANCED MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Zhuonan Jiang, Hao Yan, Xiaopeng Zhang, Zhiming Meng, Changchun Kuang, Xinkang Zhang, Yaowu He, Yanan Zhu, Hong Meng
Summary: This report introduces two new spiro-hole transport materials (HTMs) with fluorene (FBP-SFX) or dibenzofuran (DBF-SFX) peripheral substituents for highly efficient deep-blue organic light-emitting diodes (OLEDs) with narrow emission and high external quantum efficiency (EQE). The superior performance of the DBF-SFX variant is attributed to its deeper highest occupied molecular orbital level (HOMO) and small trap density, resulting in reduced band-edge offset, lower turn-on voltages, and balanced charge carrier densities. Additionally, the DBF-SFX OLED displays exceptional device stability due to stronger bond dissociation energy (BDE) and suppressed Exciton-Polaron Annihilation (EPA). This study demonstrates a new HTM design approach using a spiro-core architecture and dibenzofuran substituents for efficient and long-lasting deep-blue OLEDs.
ADVANCED OPTICAL MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Ke Lu, Yuanhong Gao, Zhenhui Wang, Xinwei Wang, Hong Meng
Summary: In this study, atomic-layer-deposition of ultrathin Co3O4 anode interlayers as hole transporting/electron blocking layers in organic photodetectors is investigated. The highly smooth Co3O4 interlayer with a deep valence band and a shallow conduction band effectively promotes charge extraction and suppresses electron injection, resulting in improved photodetection performance. At an optimal thickness of 1 nm, the Co3O4 device exhibits significantly lower dark current compared to the PEDOT:PSS device.
JOURNAL OF MATERIALS CHEMISTRY C
(2023)
Article
Materials Science, Multidisciplinary
Minming Yan, Peter J. Skabara, Hong Meng
Summary: Semi-transparent organic solar cells can optimize average visible transmittance (AVT) through an engineering strategy by selecting appropriate donor and acceptor materials. In this study, a ternary active layer consisting of two wide bandgap small molecules (BFN and BFSN), a middle bandgap polymer (PM6), and a narrow bandgap non-fullerene acceptor (Y6) is fabricated. By controlling the ratio of BFN/BFSN and PM6, films with a high AVT of 60% and 62% are achieved without changing the thickness. The ternary ST-OSC based on a 0.65 ratio of BFN/BFSN demonstrates comparable power conversion efficiency (PCE) to the binary OSCs, but a higher blended ratio results in decreased PCE due to poor component mixing and BFSN shows higher PCE compared to BFN.
JOURNAL OF MATERIALS CHEMISTRY C
(2023)
Article
Chemistry, Multidisciplinary
Lu Yao, Hong Meng, Ming Liu
Summary: In this paper, the temperature-dependent photoluminescence properties of copper-based perovskites have been investigated in detail. The negative thermal quenching property of all-inorganic CsCu2I3 perovskites has been studied and found to be tunable with the assistance of citric acid. The calculated Huang-Rhys factors are higher than many semiconductors and perovskites.
Article
Materials Science, Multidisciplinary
Wen Ting Sun, Yanling He, Muhammad Umair Ali, Qiye Liu, Hongbo Mo, Sijia Wang, Alan Man Ching Ng, Aleksandra B. Djurisic
Summary: This study investigates the performance improvement of sky-blue perovskite light-emitting diodes through optimization of perovskite composition and device architecture. By adjusting the perovskite composition and inserting a specific layer at the hole transport layer-perovskite interface, significant enhancement in device efficiency is achieved.
JOURNAL OF MATERIALS CHEMISTRY C
(2023)