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学者姓名：叶芸
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Abstract ：
Optoelectronic memristors have garnered significant attention for their critical applications in neuromorphic computing. The incorporation of materials with excellent absorption efficiency in the fabrication of photoelectric memristors can significantly enhance the image recognition capabilities. CdS nanorods (NRs) are semiconductors with strong UV light absorption that can effectively improve charge transport characteristics, reduce the loss caused by recombination at the crystal surface, and enhance the light absorption characteristics. In this work, an efficient hot injection method for controlling the growth of CdS NRs or nanosquares (NSs) by optimizing the proportion of dodecanethiol (DDT) is reported. Meanwhile, two-terminal optoelectronic memristors based on CdS NSs and CdS NRs are fabricated in which the conductance of the devices can be continuously modulated under electrical and optical stimulations of different widths/spacings/amplitudes. These advantages impart the device with exceptional electrical and optical synaptic functions including excitability, inhibition, paired-pulse facilitation, short-term/long-term plasticity, and memory-forgetting behavior. In addition, the enhancement of the image recognition efficiency of the device by CdS NRs is demonstrated in experiments with the recognition of the optical image "F". This work offers valuable insights for material selection in the development of future neuromorphic devices.
Keyword ：
artificial synapses artificial synapses Cadmium sulfide Cadmium sulfide dodecanethiol dodecanethiol nanorod nanorod optoelectronicmemristor optoelectronicmemristor
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| GB/T 7714 | Zhang, Liyan , Zhao, Wenxiao , Lin, Zexi et al. CdS Nanorods in Photoelectronic Memristors for Improved Target Recognition Efficiency [J]. | ACS APPLIED NANO MATERIALS , 2025 , 8 (6) : 2940-2951 . |
| MLA | Zhang, Liyan et al. "CdS Nanorods in Photoelectronic Memristors for Improved Target Recognition Efficiency" . | ACS APPLIED NANO MATERIALS 8 . 6 (2025) : 2940-2951 . |
| APA | Zhang, Liyan , Zhao, Wenxiao , Lin, Zexi , Wang, Ziyi , Zheng, Xingke , Chen, Enguo et al. CdS Nanorods in Photoelectronic Memristors for Improved Target Recognition Efficiency . | ACS APPLIED NANO MATERIALS , 2025 , 8 (6) , 2940-2951 . |
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全无机钙钛矿量子点因其高光致发光量子产率(Photoluminescence Quantum Yield,PLQY)、带隙可调、高色纯度等特性,在宽色域显示上的应用十分广泛,但其表面缺陷与晶格不稳定限制了其进一步应用.通过热注入法将ZnI2作为掺杂剂成功合成了 Zn2+掺杂的CsPbI3量子点(Zn:CsPbI3量子点).试验表明,Zn部分取代了 Pb,钙钛矿晶格逐渐收缩但晶型保持不变,提高了辐射衰减率,有效消除量子点缺陷态.Zn:CsPbI3量子点相较于原始CsPbI3量子点具有更好的相稳定性,PLQY也从56％提升至98％,同时PLQY在10天后仍可保持在80％以上.选用窄发射的Zn:CsPbI3,CsPbBr3与CsPbCl3量子点作为LED颜色转换材料,在国家电视标准委员会(National Television Standards Committee,NTSC)标准下,其色域达到了135.22％,证明了其在直视型LED显示屏或者液晶显示器(Liquid Crystal Display,LCD)背光领域具有潜在应用前景.
Keyword ：
Zn离子掺杂CsPbI3 Zn离子掺杂CsPbI3 材料科学 材料科学 热注入法 热注入法 离子掺杂 离子掺杂
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| GB/T 7714 | 查楠 , 蔡俊虎 , 叶芸 et al. Zn离子掺杂CsPbI3量子点及其色转换LED应用(封面文章·特邀) [J]. | 红外与激光工程 , 2025 , 54 (1) : 1-11 . |
| MLA | 查楠 et al. "Zn离子掺杂CsPbI3量子点及其色转换LED应用(封面文章·特邀)" . | 红外与激光工程 54 . 1 (2025) : 1-11 . |
| APA | 查楠 , 蔡俊虎 , 叶芸 , 徐胜 , 郭太良 , 陈恩果 . Zn离子掺杂CsPbI3量子点及其色转换LED应用(封面文章·特邀) . | 红外与激光工程 , 2025 , 54 (1) , 1-11 . |
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量子点(Quantum dots)凭借其尺寸可调控、卓越的光致发光量子产率(PLQY)以及宽光谱吸收等特性,展现出了卓越的光学性能,使其成为全彩广色域显示中LED色转换层的理想材料选择.特别是MAPbBr3钙钛矿量子点(PQDs),不仅制备工艺简单,并且还拥有优异的光电性能,因而被视为极具商业化潜力的材料.然而,MAPbBr3 PQDs在合成后其表面的配体极易脱落,导致表面缺陷态密度增加,这使得它们在水氧等环境因素下稳定性较差,最终导致其PLQY进一步降低.本研究提出了一种高效的一步合成MAPbBr3 PQDs策略:通过配体辅助再沉积技术(LARP),并创新性地使用2-己基癸酸(DA)配体替换传统的油酸(OA)配体,在室温条件下成功地合成了具有出色稳定性和高PLQY的MAPbBr3 PQDs.与单长碳链的OA配体相比,双短链的DA配体能与MAPbBr3 PQDs建立起更强的配位键.配体与PQDs之间的强相互作用有助于全面钝化晶格缺陷,从而减弱非辐射过程并提高材料的环境稳定性.因此,DA修饰后的MAPbBr3 PQDs不仅展现出高达 87.8%的PLQY,而且在水氧环境中也表现出更高的稳定性.室温环境下,使用DA配体修饰后的MAPbBr3 PQDs的PL峰值在放置半个月后仍保持在原来的68.3%,而OA配体修饰的PQDs表现出几乎完全的荧光猝灭.随后,将DA配体修饰后的绿色发射MAPbBr3 PQDs、红色发射CsPbBrI2 PQDs以及蓝色发射CsPbCl1.5Br1.5 PQDs置于聚苯乙烯(PS)环境中包覆固化成膜,替代传统荧光粉应用于显示器件发光二极管(LED)的色转换层,测试其色域范围达到了NTSC标准的137.09%.
Keyword ：
DA配体 DA配体 LED LED MAPbBr3 PQDs MAPbBr3 PQDs 广色域 广色域 稳定性 稳定性
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| GB/T 7714 | 李恭明 , 蔡俊虎 , 赖文宗 et al. 双短链配体调控提升MAPbBr3量子点性能及广色域LED显示应用 [J]. | 发光学报 , 2025 , 46 (1) : 1-11 . |
| MLA | 李恭明 et al. "双短链配体调控提升MAPbBr3量子点性能及广色域LED显示应用" . | 发光学报 46 . 1 (2025) : 1-11 . |
| APA | 李恭明 , 蔡俊虎 , 赖文宗 , 陈晓钢 , 查楠 , 叶芸 et al. 双短链配体调控提升MAPbBr3量子点性能及广色域LED显示应用 . | 发光学报 , 2025 , 46 (1) , 1-11 . |
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Quantum dots(QDs)exhibit excellent optical properties with their size tunability,excellent photoluminescence quantum yield(PLQY),and broad spectral absorption,making them an ideal material choice for full-col- or,wide-gamut LED color conversion layers. In particular,MAPbBr3 quantum dots(PQDs)are not only easy to prepare,but also possess excellent photovoltaic properties,and thus are considered to be a material with great potential for commercialization. However,the ligands on the surface of MAPbBr3 PQDs are highly susceptible to detachment after their synthesis,leading to an increase in the density of surface defect states,which makes them less stable under environmental factors such as water-oxygen and temperature,thus further degrading the PLQY. In this study,we propose an efficient one-step strategy for the synthesis of MAPbBr3 PQDs∶MAPbBr3 PQDs with excellent stability and high PLQY,which were successfully synthesized by ligand-assisted redeposition and the innovative use of 2-hex-yldecanoic acid(DA)ligand to replace the conventional oleic acid(OA)ligand at room temperature,and the double-short-chain DA ligand was able to establish a stronger coordination bond with the MAPbBr3 PQDs compared with that of the single-length carbon chain OA ligand. The strong interactions between the ligands and the PQDs contribute to the overall passivation of the lattice defects,thus mitigating the non-radiative recombination process and enhancing the environmental stability. As a result,the modified MAPbBr3 PQDs not only exhibited up to 87. 8% PLQY,but also showed higher stability in both water and oxygen environments. The PL peak of MAPbBr3 PQDs modified with DA ligands remained at 68. 3% of its original value after being left for half a month in a room temperature environment, whereas OA ligand-modified PQDs exhibited almost complete fluorescence burst. Subsequently,the DA ligand-modified green MAPbBr3 PQDs,red CsPbBrI2 PQDs,and blue CsPbCl1. 5Br1. 5 PQDs were coated and cured in a polystyrene(PS)environment to form a film,which can be used as a color conversion material instead of the traditional phosphors for the backlight of light-emitting diode(LED)displays. The color gamut is 137. 09% under NTSC standard. © 2025 Editorial Office of Chinese Optics. All rights reserved.
Keyword ：
Aspect ratio Aspect ratio Atomic emission spectroscopy Atomic emission spectroscopy Carbon Quantum Dots Carbon Quantum Dots Color Color Defect density Defect density Density (optical) Density (optical) Energy efficiency Energy efficiency Grain boundaries Grain boundaries Laser beams Laser beams Layered semiconductors Layered semiconductors Ligands Ligands Light sensitive materials Light sensitive materials Liquid crystals Liquid crystals Metamorphic rocks Metamorphic rocks Nanocrystallization Nanocrystallization Photoluminescence Photoluminescence Quantum yield Quantum yield
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| GB/T 7714 | Li, Gongming , Cai, Junhu , Lai, Wenzong et al. Performance Enhancement of MAPbBr3 Perovskite Quantum Dot for Wide Color Gamut LED via Double Short-chain Ligand Modification [J]. | Chinese Journal of Luminescence , 2025 , 46 (1) : 1-11 . |
| MLA | Li, Gongming et al. "Performance Enhancement of MAPbBr3 Perovskite Quantum Dot for Wide Color Gamut LED via Double Short-chain Ligand Modification" . | Chinese Journal of Luminescence 46 . 1 (2025) : 1-11 . |
| APA | Li, Gongming , Cai, Junhu , Lai, Wenzong , Chen, Xiaogang , Zha, Nan , Ye, Yun et al. Performance Enhancement of MAPbBr3 Perovskite Quantum Dot for Wide Color Gamut LED via Double Short-chain Ligand Modification . | Chinese Journal of Luminescence , 2025 , 46 (1) , 1-11 . |
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Inorganic metal halide perovskite quantum dots (PQDs) have recently emerged as promising candidates for color conversion materials in Micro-LED displays, due to their outstanding color purity, high absorption coefficient, tunable emission wavelength. However the inferior stability and undesirable photoluminescence quantum yield (PLQY) restrict their particle applications. Herein, CsPbX3/PMMA (X = Br, I) composites with improved stability and optical performance were successfully prepared by a general and mild in-situ polymerization strategy. The ester carbonyl (C--O) group in MMA formed complexes with Pb2+, leading to the in-situ thermal polymerization of polymethyl methacrylate (PMMA) under the action of the initiator. The multifunctional PMMA can efficiently passivate halogen vacancies while acting as a barrier against the degradation caused by heat, water, and oxygen. As a result, the PLQYs and stability of PMMA-coated CsPbX3 PQDs have been significantly improved. When implementing CsPbX3/PMMA/PDMS composites as color conversion layers in Micro-LEDs, they achieve an impressive color gamut of 127.23% with excellent stability. We believe our work will stimulate the exploration of perovskite/polymer composites for industrial Micro-LED applications.
Keyword ：
dots dots Inorganic metal halide perovskite quantum Inorganic metal halide perovskite quantum In-situ polymerization In-situ polymerization Micro-LED Micro-LED Photoluminescence Photoluminescence PMMA PMMA
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| GB/T 7714 | Cai, Junhu , Zhang, Xiang , Chen, Yu et al. Highly luminescent CsPbX3/PMMA (X=Br, I) composites with improved stability for full-color Micro-LED displays [J]. | JOURNAL OF LUMINESCENCE , 2024 , 269 . |
| MLA | Cai, Junhu et al. "Highly luminescent CsPbX3/PMMA (X=Br, I) composites with improved stability for full-color Micro-LED displays" . | JOURNAL OF LUMINESCENCE 269 (2024) . |
| APA | Cai, Junhu , Zhang, Xiang , Chen, Yu , Lai, Wenzong , Zhang, Wenyan , Lin, Zexi et al. Highly luminescent CsPbX3/PMMA (X=Br, I) composites with improved stability for full-color Micro-LED displays . | JOURNAL OF LUMINESCENCE , 2024 , 269 . |
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Over the past few years, light-emitting diodes (LEDs) have emerged as an efficient replacement for standard incandescent and fluorescent lamps, due to their superior efficiency, energy conservation, service longevity, reliability, and affordability. However, identifying a red emitter for white LEDs has presented significant challenges. This study seeks to synthesize and analyze a novel red emitter, investigating its potential use in white LEDs and indoor plant growth lighting. The Sr2Lu(Nb,Mn)O6 is manufactured employing the traditional high-temperature solid-phase method. The internal and external quantum efficiencies (IQE and EQE) of double perovskites reached 32.39% and 21.67%. The g value calculates to 2.146, which corroborates that the magnetic dipolar transitions of Mn4+ ions inhabit symmetric octahedral sites. First-principles investigations are utilized to unveil local electronic structures. Emission spectra reveal a substantial broad red emission peak at 688 nm. The Tanabe-Sugano diagram is applied to understand the luminescence mechanism. Additionally, the evaluation of parameters such as the internal UV emission ratio, crystal field strength, and Racah parameters is conducted. The luminescent intensity of the Sr2Lu(Nb,Mn)O6 can still be maintained at 60% upon reaching a temperature of 423 K. The findings suggest that Sr2Lu(Nb,Mn)O6 offers a novel alternative for white LEDs and indoor plant growth lighting. This paper unveils the local electronic structure of manganese-doped Sr2LuNbO6 double perovskite red emitter, and elaborates on its crystal structures, luminescence properties, crystal field properties, thermal stability, and energy transfer mechanisms. Based upon first principles calculations, reveals the superior photoelectric performance of it, positioning it as a potential solution for the red-deficiency in white LED and indoor lighting technologies. image
Keyword ：
double perovskite double perovskite first-principles first-principles solid-state lighting solid-state lighting thermometry thermometry white LEDs white LEDs
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| GB/T 7714 | Zheng, Xingke , Du, Aochen , Ye, Yun et al. Unveiling Local Electronic Structures of Manganese-Doped Double Perovskites Red Emitters [J]. | LASER & PHOTONICS REVIEWS , 2024 , 18 (5) . |
| MLA | Zheng, Xingke et al. "Unveiling Local Electronic Structures of Manganese-Doped Double Perovskites Red Emitters" . | LASER & PHOTONICS REVIEWS 18 . 5 (2024) . |
| APA | Zheng, Xingke , Du, Aochen , Ye, Yun , Chen, Enguo , Xu, Sheng , Guo, Tailiang . Unveiling Local Electronic Structures of Manganese-Doped Double Perovskites Red Emitters . | LASER & PHOTONICS REVIEWS , 2024 , 18 (5) . |
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Alloyed quantum dots (QDs) show great potential for photoluminescence (PL) applications. However, the oxidative decay of QDs during photoexcitation has been a major hurdle to the application of QDs. Blocking water-oxygen erosion by coating oxides on the surface of QDs is a common technique. Even though, this approach often leads to alterations in the optical properties of QDs and reduced compatibility with polymers. In this paper, hindered phenol was utilized to treat QDs to form QD/Hindered phenol complexes. Using the reduction of phenolic hydroxyl group in the hindered phenol, the hindered phenol was used as an exhausted substance to protect QDs from oxidation. After 450 h of aging, the obtained QD/Hindered phenol complex kept the photoluminescence quantum yield (PLQY) at 48 %. The luminance of the QD diffusion plate prepared by the QD/Hindered phenol complexes maintained above 98 % of the initial value after aging 1032 h. The introduction of phosphite ester further improved the photostability of QD/Hindered phenol complex under blue-light excitation. This technique promotes the application of QDs in polymers and offers a new reference for improving the stability of QDs under photoexcitation.
Keyword ：
Hindered phenol Hindered phenol Optical stability Optical stability Photo -oxidation Photo -oxidation QD diffusion plate QD diffusion plate Quantum dots Quantum dots
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| GB/T 7714 | Zeng, Zhenyu , Xie, Hongxing , Ye, Yun et al. Enhancement of photo-oxidation resistance of quantum dots by hindered phenol and its application in diffusion plate [J]. | OPTICAL MATERIALS , 2024 , 148 . |
| MLA | Zeng, Zhenyu et al. "Enhancement of photo-oxidation resistance of quantum dots by hindered phenol and its application in diffusion plate" . | OPTICAL MATERIALS 148 (2024) . |
| APA | Zeng, Zhenyu , Xie, Hongxing , Ye, Yun , Zheng, Xingke , Lin, Qizhong , Chen, Enguo et al. Enhancement of photo-oxidation resistance of quantum dots by hindered phenol and its application in diffusion plate . | OPTICAL MATERIALS , 2024 , 148 . |
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Self‐luminous projection technologies, such as Micro‐LED chips, compared with traditional projection methods, does not require complex lighting path. So it can significantly improve light utilization rate and reduce costs. However, technical challenges in Micro‐LED chip production make it difficult to improve the chip's resolution further. Some studies have shown that compared with the original image resolution of the spatial light modulator (SLM), the projection images overlapped is an effective method to improve the resolution of the projector. In this paper, we study the working principle of the extended pixel resolution actuator and propose a self‐luminous projection resolution enhancement system based on Micro‐LED chip. It can improve the resolution of the projection images with the resolution of the Micro‐LED chip unchanged. The resolution enhancement system consists of a Micro‐LED chip, an extended pixel resolution actuator and a projection lens. According to the working principle of the extended pixel resolution actuator, the projection lens is an image‐space telecentric structure, in which modulation transfer function of projection imaging at Nyquist frequency 100 lp/mm is greater than 0.4. Finally, the tolerance analysis on the projection lens is completed. The results show that the projection lens has a high success rate in processing. This work is of great significance for improving the resolution of Micro‐LED self‐luminous projection images.
Keyword ：
extended pixel resolution actuator extended pixel resolution actuator Micro-LED Micro-LED optical design optical design
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| GB/T 7714 | Weijie Hao , Huajian Jin , Enguo Chen et al. P‐17.3: Micro‐LED Projection Display Resolution Enhancement System [J]. | SID Symposium Digest of Technical Papers , 2024 , 55 : 1550-1553 . |
| MLA | Weijie Hao et al. "P‐17.3: Micro‐LED Projection Display Resolution Enhancement System" . | SID Symposium Digest of Technical Papers 55 (2024) : 1550-1553 . |
| APA | Weijie Hao , Huajian Jin , Enguo Chen , Sheng Xu , Yun Ye , Tailiang Guo . P‐17.3: Micro‐LED Projection Display Resolution Enhancement System . | SID Symposium Digest of Technical Papers , 2024 , 55 , 1550-1553 . |
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| GB/T 7714 | Aochen Du , Xingke Zheng , Ye Yun et al. 8‐1: High power solid state lighting via transparent ceramics protecting quantum dots diffusion plates [J]. | SID Symposium Digest of Technical Papers , 2024 , 55 : 79-79 . |
| MLA | Aochen Du et al. "8‐1: High power solid state lighting via transparent ceramics protecting quantum dots diffusion plates" . | SID Symposium Digest of Technical Papers 55 (2024) : 79-79 . |
| APA | Aochen Du , Xingke Zheng , Ye Yun , Xu Sheng , Chen Enguo , Guo Tailiang . 8‐1: High power solid state lighting via transparent ceramics protecting quantum dots diffusion plates . | SID Symposium Digest of Technical Papers , 2024 , 55 , 79-79 . |
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| GB/T 7714 | Longwen Yang , Aochen Du , Xingke Zheng et al. P‐14.1: Rapid synthesis of manganese doped perovskite quantum dots for white light‐emitting diodes [J]. | SID Symposium Digest of Technical Papers , 2024 , 55 : 1415-1416 . |
| MLA | Longwen Yang et al. "P‐14.1: Rapid synthesis of manganese doped perovskite quantum dots for white light‐emitting diodes" . | SID Symposium Digest of Technical Papers 55 (2024) : 1415-1416 . |
| APA | Longwen Yang , Aochen Du , Xingke Zheng , Yun Ye , Enguo Chen , Sheng Xu et al. P‐14.1: Rapid synthesis of manganese doped perovskite quantum dots for white light‐emitting diodes . | SID Symposium Digest of Technical Papers , 2024 , 55 , 1415-1416 . |
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