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| 1 | Metal halide perovskite nanocrystals and their applications in optoelectronic devices显示文摘In recent years, metal halide perovskite nanocrystals (NCs) have been favored by manyresearchers due to their unique properties including long carrier diffusion length, highcarrier mobility, tunable emission wavelength, and narrow full width at half maximum,making them great application potentials in optoelectronic devices. The photoluminescencequantum yields of perovskite NCs are nearly 100%, and the device efficiencyof perovskite NC-based light-emitting diodes (LEDs) has been improvedsignificantly from below 0.1% to over 20%. In addition, perovskite NC-based solarcells and photodetectors have also developed rapidly in recent years. Here, we summarizethe synthesis and the basic optoelectronic properties of metal halide perovskiteNCs and introduce their applications in LEDs, solar cells, and photodetectors. | Po Lu Min Lu Hua Wang Ning Sui Zhifeng Shi William W.Yu Yu Zhang | 2019 | InfoMat2019，1，4： | 7 |
| 2 | Transparent inorganic multicolour displays enabled by zinc-based electrochromic devices显示文摘Electrochromic displays have been the subject of extensive research as a promising colour display technology.The current state-of-the-art inorganic multicolour electrochromic displays utilize nanocavity structures that sacrifice transparency and thus limit their diverse applications.Herein,we demonstrate a transparent inorganic multicolour display platform based on Zn-based electrochromic devices.These devices enable independent operation of top and bottom electrochromic electrodes,thus providing additional configuration flexibility of the devices through the utilization of dual electrochromic layers under the same or different colour states.Zn-sodium vanadium oxide(Zn-SVO)electrochromic displays were assembled by sandwiching Zn between two SVO electrodes,and they could be reversibly switched between multiple colours(orange,amber,yellow,brown,chartreuse and green)while preserving a high optical transparency.These Zn-SVO electrochromic displays represent the most colourful transparent inorganic-based electrochromic displays to date.In addition,the Zn-SVO electrochromic displays possess an open-circuit potential(OCP)of 1.56 V,which enables a self-colouration behaviour and compelling energy retrieval functionality.This study presents a new concept integrating high transparency and high energy efficiency for inorganic multicolour displays. | Wu Zhang Haizeng Li William W.Yu Abdulhakem Y.Elezzabi | 2020 | Light(Science & Applications)2020，9，1： | 4 |
| 3 | Wide emission shifts and high quantum yields of solvatochromic carbon dots with rich pyrrolic nitrogen显示文摘Carbon dots(CDs)with solvatochromic emission colors in different solvents have attracted much attention as a new class of luminescent nanomaterial owing to their facile synthesis and low production cost.In this work,we prepared two kinds of CDs with solvatochromic emissions:green emission CDs(G-CDs)and multicolor emission CDs(M-CDs).G-CDs synthesized from o-phenylenediamine exhibited weak photoluminescence emission(quantum yield 2.8%-6.1%)and 39 nm solvatochromic shifts(492-531 nm).In contrast,M-CDs prepared from o-phenylenediamine and 4-aminophenol showed 87 nm solvatochromic shift range(505-592 nm)and much higher photoluminescence quantum yield(18.4%-32.5%).The two CDs exhibited different emission,absorption,and photoluminescence lifetime.The origin of solvatochromic shifts and the formation mechanism of CDs were demonstrated by analyzing the structures and compositions of two CDs.High percentages of pyrrolic nitrogen and amino nitrogen make wider solvatochromic shifts and higher quantum yields.The results were well supported by density functional theory calculations.This effective strategy to expand solvatochromic shift range and improve quantum yields could open a new window to prepare satisfied solvatochromic carbon dots. | Hua Wang Philip Haydel Ning Sui Lina Wang Yan Liang William W.Yu | 2020 | Nano Research2020，13，9： | 3 |
| 4 | Boron doped graphdiyne:A metal-free peroxidase mimetic nanozyme for antibacterial application显示文摘The abuse of conventional antibiotics leads to increasing bacterial resistance.Nanozyme is a new kind of ultra-efficient and safe nanomaterial with intrinsic enzyme-like activities,showing remarkable potential as a next generation nanobactericide.Graphdiyne(GDY)is a burgeoning two-dimensional(2D)carbon allotrope with intriguing physicochemical properties,holding a great promise as a metal-free nanozyme.In this study,a boron doped GDY nanosheet(B-GDY)was constructed to simulate the performance of peroxidase(POD).By promoting the decomposition of H_(2)O_(2) to produce reactive oxygen species(ROS),the bactericidal efficacies against both Gram-positive and Gram-negative bacteria were substantially enhanced attributed to the extremely high catalytic activity of B-GDY.In-depth density functional theory(DFT)calculations illuminate that doping of boron can introduce more active B-defect sites as well as lower Gibbs free energy during the H_(2)O_(2) decomposition reaction.Notably,B-GDY contributes to significant wound healing and excellent biocompatibility,reducing the biological burden.The design of this nanozyme opens a new avenue for the development of alternative antibiotics. | Xuelong Bi Qiang Bai Lina Wang Fanglin Du Manhong Liu William W.Yu Siheng Li Jiaqiang Li Zhiling Zhu Ning Sui Jin Zhang | 2022 | Nano Research2022，15，2： | 2 |
| 5 | An overview of recent progress in the development of flexible electrochromic devices显示文摘Electrochromic materials are capable of reversibly switching their colors or optical properties through redox reactions under applied voltages,which have shown great potential applications including smart windows,nonemissive displays,optical filters,among others.Although the current rigid electrochromic devices have shown emerging interest and developed rapidly,many applications(e.g.,wearable/deformable optoelectronics)are blocked due to their inflexible features.Herein,the adaption of rigid electrochromic devices to flexible ones is of particular interest for the new era of smart optoelectronics.In this review,the current state-of-the-art achievements of flexible electrochromic devices(FECDs)are highlighted,along with their design strategies and the choice of electrochromic materials.The recent research progress of FECDs is reviewed in detail,and the challenges and corresponding solutions for real-world applications of FECDs are discussed.Furthermore,we summarize the basic fabrication strategies of FECDs and their potential applications.In addition,the development trend,the perspectives,and the outlook of FECDs are discussed at the end of this Review,which may provide recommendations and potential directions to advance the practical applications of FECDs. | Bin Wang Wu Zhang Feifei Zhao William W.Yu Abdulhakem Y.Elezzabi Linhua Liu Haizeng Li | 2023 | Nano Materials Science2023，5，4： | 0 |
| 6 | White-light-emitting diodes using GaN-excited CdSe/CdS/ZnS quantum dots显示文摘Fluorescence-based white-light-emitting diodes(WLEDs) were fabricated using blue GaN chips and green- and red-emitting CdSe/CdS/ZnS quantum dots(QDs).The coordinate and color temperature of the WLEDs could be varied because of the size-tunable emission of CdSe QDs from 510 to 620 nm.Warm and cold white emissions were confirmed with the color temperature ranging from 4000 to 9000 K.Color coordinates were analyzed at different bias.The fast enhancement of blue emission resulted in the shift of color coordinates to the cold side.The stability of white emission during operation was analyzed;stable spectra were achieved within 90 min. | Yijun Lin Yu Zhang Jia Zhao Pengfei Gu Ke Bi Qiuran Zhang Hairong Chu Tieqiang Zhang Tian Cui Yiding Wang Jun Zhao William W.Yu | 2014 | Particuology2014，12，4： | 0 |
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