Article
Chemistry, Multidisciplinary
Fang Zhang, Hao Min, Ya Zhang, Zhiyuan Kuang, Jiaqi Wang, Ziqian Feng, Kaichuan Wen, Lei Xu, Chao Yang, Haokun Shi, Chunxue Zhuo, Nana Wang, Jin Chang, Wei Huang, Jianpu Wang
Summary: Tin-based perovskites show great potential to replace toxic lead-based materials in optoelectronic applications. However, the slow development of tin perovskite LEDs is hindered by the challenge of obtaining high-quality tin perovskite films. This study introduces a vapor-assisted spin-coating method to achieve high-quality tin perovskites and high-efficiency LEDs.
ADVANCED MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Ye Jin Heo, Ho Jin Jang, Joo-Hong Lee, Sae Byeok Jo, Seonkwon Kim, Dong Hae Ho, Seok Joon Kwon, Kyusun Kim, Il Jeon, Jae-Min Myoung, Jun Yeob Lee, Jin-Wook Lee, Jeong Ho Cho
Summary: In order to address toxicity issues of Pb-based perovskites, Sn-based perovskites have been studied as a promising alternative due to their similar valence electron configuration. However, the oxidation of Sn2+ to Sn4+ in the precursor solution and films has been a problem. This study proposes N,N'-dimethylpropyleneurea (DMPU) as a Lewis base to suppress the oxidation of Sn2+ and improve the performance and stability of Sn-based perovskite light emitting diodes (PeLEDs). The optimized PeLED based on DMPU achieved significantly enhanced luminance and external quantum efficiency compared to devices without DMPU, providing a promising method for developing high-performance and eco-friendly PeLEDs using Sn perovskites.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Article
Nanoscience & Nanotechnology
Yu-Hong Cheng, Reine Moriyama, Hinako Ebe, Kei Mizuguchi, Ryohei Yamakado, Shotaro Nishitsuji, Takayuki Chiba, Junji Kido
Summary: Metal halide perovskites have excellent optoelectronic and semiconducting properties but are often associated with environmental concerns due to the toxicity of lead. This study introduces a two-step crystallization method to improve the performance of lead-free PEA(2)SnI(4) perovskite. The resulting film exhibits narrowed emission and reduced Sn4+ content, leading to a higher external quantum efficiency in the resulting LED.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Multidisciplinary
Chenhui Wang, Siqi Cui, Yangyang Ju, Yu Chen, Shuai Chang, Haizheng Zhong
Summary: This study investigates the surface modification effects of diphenylphosphine oxide (DPPO) derivatives on PEA(2)SnI(4) film preparation. DPPO derivatives with hydroxyl groups or substituent groups that can form hydroxyl groups are found to have a positive effect in accelerating Sn2+ oxidation, making them unfavorable for surface modification. In contrast, amino-functionalized DPPO molecules effectively modify the defects in PEA(2)SnI(4) films and improve crystallinity. This work demonstrates color-stable pure-red PeLEDs with a narrow emission spectrum at 630 nm, high luminance, and good external quantum efficiency, which have important implications for the selection of effective molecular additives in Sn-based perovskites.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Xiangyu Fu, Yash Mehta, Yi-An Chen, Lei Lei, Liping Zhu, Nilesh Barange, Qi Dong, Shichen Yin, Juliana Mendes, Siliang He, Renuka Gogusetti, Chih-Hao Chang, Franky So
Summary: The study demonstrates highly directional and polarized light emission from LEDs by selectively diffracting the TE waveguide mode, showing potential for more efficient photonic applications.
ADVANCED MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Ge Mu, Tianyu Rao, Yawei Qi, Su Ma, Qun Hao, Menglu Chen, Xin Tang
Summary: An optoelectronic device called color-tunable organic light-emitting diode (CTOLED) is developed to achieve interactive signal visualization in the intelligent era. The device enables multicolor visualization of infrared light and temperature distribution through a multi-stimuli responsive silicon sensor. It offers the user the ability to manipulate the device using an infrared pen, influencing the displayed patterns and colors. Additionally, the device can sense temperature and display it in different colors, making it a promising wearable temperature visualization monitor.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Multidisciplinary Sciences
Jin-Hoon Kim, Jin-Woo Park
Summary: An intrinsically stretchable organic light-emitting diode, made of highly stretchable constituent materials, is able to emit light under strains as large as 80%. It has a low turn-on voltage of 8 V and a maximum luminance of 4400 cd m(-2) from both the anode and cathode sides. The device can withstand repeated stretching cycles up to 200 times and shows improved light-emitting efficiency with small stretches up to 50%.
Article
Materials Science, Multidisciplinary
Wei Chen, Chuan Xu, Lingqing Kong, Xiang-Yang Liu, Xingye Zhang, Naibo Lin, Xinhua Ouyang
Summary: This study reports the use of silk fibroin (SF) as a flexible OLED substrate to improve device performance by enhancing light extraction efficiency (LEE). SF-based flexible OLED outperforms the reference device in terms of turn-on voltage, peak brightness, and LEE. The improved performance can be attributed to the low refractive index of SF, its lower surface roughness, and more matched energy levels compared to other substrates. Additionally, a molecular dipole layer formed between the interface of indium tin oxide (ITO) and SF effectively changes the ITO work function, reducing the potential barrier height for hole transfer.
ADVANCED OPTICAL MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Haoran Jia, Hongfei Shi, Runnan Yu, Huanyu Ma, Zhibin Wang, Chao Zou, Zhan'ao Tan
Summary: This study introduces an organic additive, biuret, to address the issues of Sn oxidation and fast crystallization in lead-free perovskite emitters. The interaction between biuret and 2D Sn halide perovskite is shown to be robust, improving the luminous efficiency of the perovskite light-emitting diodes (PeLEDs). The research provides insights into the chemical interaction between organics and 2D Sn halide perovskites, contributing to the development of efficient lead-free PeLEDs.
Article
Materials Science, Multidisciplinary
Yong-Ho Ra, Cheul-Ro Lee
Summary: A new approach to reduce the size of photonic device chips is reported, utilizing a monolithic light reflector-nanowire LED system. Vertical cavity nanowire structure for surface-lighting emission is developed using selective area epitaxy, with the light reflection provided by Al metal reflector deposited by MBE technique. The approach shows significantly improved light efficiency at specific spectral wavelength, promising a new route for next-generation photonic and electronic devices.
ADVANCED MATERIALS TECHNOLOGIES
(2021)
Article
Optics
Guanhao Liu, Zhiyi Li, Xiaoxiao Hu, Yuanyuan Qin, Chun-Sing Lee, Dongqi Chen, Lingxue Wang, Jianjun Liu, Pengfei Wang, Yong-Jin Pu, Ying Wang
Summary: This study demonstrates highly efficient and stable OLEDs with thicknesses of over 1 mu m and low operating voltages. MoO3/SimCP2 is used as a hole-injection layer and a thick layer of TAPC is used as a hole-transporting layer. A thin layer of HAT-CN is incorporated to suppress electron leakage. The research paves the way for large-area OLED-based displays and lighting with high production yields.
Article
Nanoscience & Nanotechnology
Junpei Watanabe, Hiroyuki Yamada, Hong-Tao Sun, Taku Moronaga, Yasushi Ishii, Naoto Shirahata
Summary: A high external quantum efficiency silicon quantum dot light-emitting diode was developed for emission in the NIR-II range. By optimizing the preparation method of Si-QDs and device structure, stable emission properties and high photoluminescence quantum yield were achieved.
ACS APPLIED NANO MATERIALS
(2021)
Article
Chemistry, Physical
Lianna Chen, Zhiyuan Qin, Shuming Chen
Summary: In this study, a new method has been developed to achieve high-resolution pixelated emission by controlling the thickness of transparent electrodes, resulting in a color-converting cavity that can selectively convert unpatterned quantum-dot white emission into saturated red, green, and blue emission. This method enables ultrahigh density red, green, and blue emission with a resolution of approximately 1700 pixels per inch, as well as achieving a color gamut of 111% NTSC.
Article
Materials Science, Multidisciplinary
Clement Brouillac, Fan-Cheng Kong, Joelle Rault-Berthelot, Cassandre Quinton, Zuo-Quan Jiang, Cyril Poriel
Summary: Designing deep-blue fluorophores with a low CIEy is crucial for OLED technology, whether for display applications or new applications like antibacterial light sources. This study reports the synthesis, physico-chemical properties, and application of two deep-blue emitters in an OLED. The emitters demonstrated high device performance with suitable CIE coordinates, and one emitter showed a deep-blue emission with an EQE of 1.7% and a V-on of 4 V, fitting the NTSC and EBU standards.
ADVANCED MATERIALS TECHNOLOGIES
(2023)
Article
Chemistry, Physical
Xinsu Zhang, Zhibin Zhang, Yixuan Liu, Shuangshuang Shi, Yuan Zhang, Yue Cao, Lingling Li, Chong Geng, Yuanqin Xia, Junjie Zhu, Shu Xu
Summary: A NC-NC Förster resonance energy transfer (FRET) system was developed in semiconductor nanocrystals, utilizing CsPbBr3 NCs as donors and CdSe/CdS NCs as acceptors. The system showed significant reductions in integrated photoluminescence intensity in toluene and octadecene solvents, with a Dexter energy transfer process leading to additional PL enhancement. This proposed system demonstrates improved lightconversion efficiency and anti-quenching properties, making it superior in light down-conversion applications.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2021)
Article
Environmental Sciences
Jingjing Yao, Zhaoxia Peng, Weifeng Chen, Qingyuan Lin, Mengsi Cheng, Haipu Li, Ying Yang, Hui Ying Yang
Summary: In this study, the coagulation performance of polystyrene microplastics was evaluated using polyaluminum sulfate (PAS) coagulant. The optimal dosage of PAS was found to achieve a polystyrene removal efficiency of 90.4%. Surface characteristics, as well as the type of coagulants, significantly impact the coagulation performance.
MARINE POLLUTION BULLETIN
(2023)
Editorial Material
Chemistry, Physical
Hong Jin Fan
MATERIALS TODAY ENERGY
(2023)
Article
Chemistry, Multidisciplinary
Liping Yang, Lu Guo, Dong Yan, Ye Wang, Ting Shen, Dong-Sheng Li, Mei Er Pam, Yumeng Shi, Hui Ying Yang
Summary: In this study, a hollow structure design and phase structure engineering were used to enhance the electrochemical performance of (Bi-Sb)2S3@N-C anode in potassium ion batteries (PIBs). The (Bi-Sb)2S3@N-C anode exhibited superior (de)-potassiation kinetics, excellent rate performance, and long cycling life due to the unique reaction mechanism and advantages of the hollow nanostructure with carbon shell. Additionally, the (Bi-Sb)2S3@N-C//PTCDA full cell showed a high reversible capacity after 300 cycles.
Article
Chemistry, Applied
Bolun Yu, Jingjing Yao, Haipu Li, Hui Ying Yang
Summary: The Fe2+-activated persulfate and H2O2 system showed efficient removal of mixed sulfonamides under a wide pH and temperature range. The coexistence of sulfate radicals and hydroxyl radicals in the system played a crucial role in the elimination of sulfonamides. The reaction rate constants of the radicals at different reactive sites explained the varying removal ratios of different sulfonamides.
APPLIED ORGANOMETALLIC CHEMISTRY
(2023)
Article
Engineering, Environmental
Jing Wang, Runhui Pan, Shiye Yan, Rui Wang, Xingyu Niu, Qi Hao, Jilei Ye, Yuping Wu, Hui Ying Yang
Summary: Constructing heterostructures is an effective strategy for efficient photocatalysis, and the type of heterojunctions is determined by the charge carrier transfer path. Understanding the charge carrier transfer mechanism of heterojunctions is crucial for guiding the construction of rational heterojunctions. In this study, an S-scheme K6Nb10.8O30@Zn2In2S5 (KNbO@ZIS) heterojunction with a 1D/2D core-shell structure is designed to improve photocatalytic hydrogen production. The improved photocatalytic performance is mainly attributed to the suppressed charge carrier recombination and accelerated charge carrier transfer in the photocatalysts.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Huan Liu, Zijun Xin, Bin Cao, Zhijing Xu, Bin Xu, Qizhen Zhu, Jin-Lin Yang, Bao Zhang, Hong Jin Fan
Summary: Trehalose, as an electrolyte additive, can improve the stability of the zinc anode, promote planar zinc deposition, and increase the cycle life of the battery.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Tianjiang Sun, Zhehan Yi, Weijia Zhang, Qingshun Nian, Hong Jin Fan, Zhanliang Tao
Summary: In this study, a small organic molecule PTONQ with extended pi-conjugated plane was designed and a partial charge regulation strategy was adopted. The Zn//PTONQ battery showed good cycling stability, fast charge transfer kinetics, and anti-freeze performance. Ex situ characterizations confirmed that the capacity mainly comes from Zn2+ insertion/removal of PTONQ and explained the formation mechanism of the by-products.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Xinxin Cai, Xiaoxu Wang, Zhe Bie, Zhaoyang Jiao, Yiran Li, Wei Yan, Hong Jin Fan, Weixing Song
Summary: In this study, a facile and controllable layer-by-layer assembly method was used to construct an ion-conductive and mechanically robust electrolyte/anode interface for stabilizing the zinc anode. The resulted film showed tailored solvation sheath of zinc ions, facilitating the oriented deposition of zinc. The symmetric cells with four double layers exhibited stable cycles for over 6500 hours and the pouch cell maintained a high capacity retention of 83% after 500 cycles.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Xinyuan Zhang, Bao Zhang, Jin-Lin Yang, Jiawen Wu, Heng Jiang, Fei Du, Hong Jin Fan
Summary: A decoupled aqueous zinc-sulfur battery with a high-mass loading sulfur electrode and single ion-selective membrane has been achieved. The battery exhibits a reversible energy density of 3988 Wh kgs-1, stable operation over 300 cycles, and an energy density of 53.2 mWh cm-2.
ADVANCED MATERIALS
(2023)
Article
Thermodynamics
Shuai Ran, Xin Zhang, Yue Jiang, Ying Gao, Hui Xu, Hui Ying Yang, Jiayu Xu, Yuang Wang, Yuan Guo, Hong Zhang, Yinong Lyu
Summary: Gradient enzymatic pretreatment is an effective method for improving the quality of hydrothermal carbonation products from food waste. It facilitates nitrogen migration and ensures sustainable production and enhanced product properties.
Article
Engineering, Chemical
Jingjing Yao, Jiayi Wen, Haipu Li, Ying Yang, Hui Ying Yang
Summary: The complexation of tetracyclines with Fe species plays a significant role in the removal of tetracyclines by ferrate. Experimental results show that the complexation of tetracyclines with Fe3+ contributes to 79% of the overall removal, followed by oxidation (11%) and adsorption/flocculation (10%). Thermodynamic and kinetic calculations suggest that complexation reactions between Fe3+ and tetracyclines are more likely to occur than oxidation reactions between ferrate and hydroxyl radicals. The complexation rates of tetracyclines with Fe3+ determine the removal of multiple tetracyclines by ferrate, highlighting the importance of considering complexation in the removal of pollutants.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Review
Chemistry, Multidisciplinary
Mingming Han, Tian Chen Li, Xiang Chen, Hui Ying Yang
Summary: This review summarizes the issues and electrolyte modulation strategies for low-temperature operation of aqueous rechargeable Zn metal batteries (ARZBs). It reveals the fundamentals of the liquid-solid transition of water at low temperatures and the critical factors for inferior performance. The electrolyte modulation strategies are categorized, and the recent progress of these strategies in low-temperature Zn batteries is emphasized.
Article
Chemistry, Physical
Kan Fang, Yi-Lin Liu, Peng Chen, Heng Zhang, Daliang Fang, Hua-Yu Zhang, Zhan Wei, Ling Ding, Gui-Gen Wang, Hui Ying Yang
Summary: This research presents an electrochemical activation strategy to build high energy density ZIBs by designing a flexible cathode composed of NH4+ pillared ammonium vanadate nanosheets on carbon cloth (NVMCE@CC). The activated NVMCE@CC cathode delivers large areal capacity and superior cycling stability, and shows admirable performance in extreme situations.
Article
Engineering, Chemical
Liping Yang, Yixiang Li, Lu Guo, Pin Ma, Zhi Yi Leong, Jing Wang, Hui Ying Yang
Summary: This study aims to extract high-quality water for potable and industrial use from unconventional water sources using innovative methods. An innovative adsorbent was used to reduce boron and chloride levels in brackish water, and a capacitive deionization system was employed for chloride ion removal. The results demonstrate that this approach can meet water quality standards while significantly reducing chemical costs.
Article
Chemistry, Multidisciplinary
Jing Zhang, Yufeng Zhao, Wanting Zhao, Jing Wang, Yongfeng Hu, Chengyu Huang, Xingli Zou, Yang Liu, Dengsong Zhang, Xionggang Lu, Hongjin Fan, Yanglong Hou
Summary: A spin transition in a Mg-Fe dual-site catalyst is achieved by taking advantage of the local crystal field distortion induced by the large ionic radii difference between Fe/Mg. The as-synthesized catalyst demonstrates a low overpotential of 224 mV at 10 mA cm-2 for oxygen evolution reaction and an electrolysis voltage of only 1.542 V at 10 mA cm-2 for the overall water splitting.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
