Advanced Photonics Research最新文献

High-Power GaN-Based Blue Laser Diodes Degradation Investigation and Anti-aging Solution 大功率氮化镓基蓝色激光二极管的降解研究与抗老化解决方案

IF 3.7

Advanced Photonics Research Pub Date : 2024-11-03 DOI: 10.1002/adpr.202470032

Enming Zhang, Yue Zeng, Wenyu Kang, Zhibai Zhong, Yushou Wang, Tongwei Yan, Shaohua Huang, Zhongying Zhang, Kechuang Lin, Junyong Kang

引用次数: 0

Maximizing the Electromagnetic Efficiency of Spintronic Terahertz Emitters 最大化自旋电子太赫兹发射器的电磁效率

IF 3.7

Advanced Photonics Research Pub Date : 2024-11-03 DOI: 10.1002/adpr.202470030

Pierre Koleják, Geoffrey Lezier, Daniel Vala, Baptiste Mathmann, Lukáš Halagačka, Zuzana Gelnárová, Yannick Dusch, Jean-François Lampin, Nicolas Tiercelin, Kamil Postava, Mathias Vanwolleghem

引用次数: 0

Ultrafast Terahertz Superconductor Van der Waals Metamaterial Photonic Switch 超快太赫兹超导体范德华超材料光子开关

IF 3.7

Advanced Photonics Research Pub Date : 2024-10-07 DOI: 10.1002/adpr.202470029

Kaveh Delfanazari

引用次数: 0

Structural Colors Derived from the Combination of Core–Shell Particles with Cellulose 核壳粒子与纤维素结合产生的结构色彩

IF 3.7

Advanced Photonics Research Pub Date : 2024-10-07 DOI: 10.1002/adpr.202470027

Regina Leiner, Lukas Siegwardt, Catarina Ribeiro, Jonas Dörr, Christian Dietz, Robert W. Stark, Markus Gallei

引用次数: 0

A Two-Stage Polymerization Strategy for Preparing Polymer-Network Liquid Crystals with Oxygen-Sensing Property 制备具有氧传感特性的聚合物网络液晶的两阶段聚合策略

IF 3.7

Advanced Photonics Research Pub Date : 2024-09-09 DOI: 10.1002/adpr.202470026

Zongdai Liu, Zhibo Zhang, Yi Zhang, Dan Luo, Kun-Lin Yang

引用次数: 0

Progress on Coherent Perovskites Emitters: From Light-Emitting Diodes under High Current Density Operation to Laser Diodes 相干 Perovskites 发射器的研究进展：从高电流密度下的发光二极管到激光二极管

IF 3.7

Advanced Photonics Research Pub Date : 2024-09-09 DOI: 10.1002/adpr.202470024

Gayoung Lee, Yejin Jun, Hyeonji Lee, Kwangdong Roh

引用次数: 0

Relative Permittivity and Optoelectronic Performances of Halide Perovskites: Study of Combined First-Principles Simulation and Combinatorial Synthesis 卤化物包荧光体的相对导率和光电性能：第一原理模拟与组合合成的结合研究

IF 3.7

Advanced Photonics Research Pub Date : 2024-09-04 DOI: 10.1002/adpr.202400039

SangMyeong Lee, Hee Jung Kim, Young Ju Kim, Geon Woo Yoon, Oh Yeong Gong, Won Bin Kim, Hyun Suk Jung

{"title":"Relative Permittivity and Optoelectronic Performances of Halide Perovskites: Study of Combined First-Principles Simulation and Combinatorial Synthesis","authors":"SangMyeong Lee, Hee Jung Kim, Young Ju Kim, Geon Woo Yoon, Oh Yeong Gong, Won Bin Kim, Hyun Suk Jung","doi":"10.1002/adpr.202400039","DOIUrl":"https://doi.org/10.1002/adpr.202400039","url":null,"abstract":"Owing to their excellent optoelectronic properties, halide perovskites (HPs) have garnered significant attention in the field of optoelectronics. However, conventional HPs-based optoelectronic devices primarily are fabricated using solution-based processes, implying that extremely time-consuming needs to individually synthesize their composition-dependent optoelectronic properties. This study demonstrates the feasibility of combining first-principles simulations with combinatorial synthesis, comparing the effects of HP properties on optoelectronic devices using this combined approach. The first-principles simulations confirm that increasing the ratio of small halide ions increased the band gap by k·p perturbation theory and harmonic oscillator models. By fabricating HP thin films with compositional gradients using combinatorial synthesis, it is confirmed that an increase in band gap corresponds to a decrease in static relative permittivity. Furthermore, HP-based optoelectronic devices are fabricated to measure their photoelectric conversion efficiency and responsivity based on the simulated and measured relative permittivity, including time-resolved photoluminescence. The findings demonstrate the influence of the relative permittivity on device performance, elucidating the relationship between band structure and relative permittivity. Therefore, in this study, the potential of combining first-principles simulations with combinatorial synthesis is confirmed by comparing the relative permittivity characteristics of optoelectronics developed using this combined approach.","PeriodicalId":7263,"journal":{"name":"Advanced Photonics Research","volume":"5 11","pages":""},"PeriodicalIF":3.7,"publicationDate":"2024-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/adpr.202400039","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142579737","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

High-Power GaN-Based Blue Laser Diodes Degradation Investigation and Anti-aging Solution 大功率氮化镓基蓝色激光二极管的降解研究与抗老化解决方案

IF 3.7

Advanced Photonics Research Pub Date : 2024-09-04 DOI: 10.1002/adpr.202400119

Enming Zhang, Yue Zeng, Wenyu Kang, Zhibai Zhong, Yushou Wang, Tongwei Yan, Shaohua Huang, Zhongying Zhang, Kechuang Lin, Junyong Kang

{"title":"High-Power GaN-Based Blue Laser Diodes Degradation Investigation and Anti-aging Solution","authors":"Enming Zhang, Yue Zeng, Wenyu Kang, Zhibai Zhong, Yushou Wang, Tongwei Yan, Shaohua Huang, Zhongying Zhang, Kechuang Lin, Junyong Kang","doi":"10.1002/adpr.202400119","DOIUrl":"https://doi.org/10.1002/adpr.202400119","url":null,"abstract":"Gallium nitride (GaN)-based semiconductor laser diodes (LDs) have garnered significant attention due to their promising applications. However, high-power LDs face serious degradation issues that limit their practical use. This study investigates the degradation factors of 437 nm and 6.3 W LDs by comparing light–current–voltage (L–I–V) characteristics, transmission electron microscopy (TEM), cathodoluminescence (CL), and secondary ion mass spectroscopy (SIMS) before and after 1000-h aging. The diffusion of mirror coating from the resonant cavity surface is identified as a key factor contributing to high-power LD degradation, which has not been reported in milliwatt-level LDs. Meanwhile, the mechanisms behind the LD degradation are profiled and summarized together with the diffusion and other factors. On basis of the mechanism exploration, an anti-aging technology for high-power GaN-based LDs is developed by using aluminum nitride for passivation layer and sapphire materials for mirror film. This anti-aging technology has been verified, and a nearly ten-time degradation suppression is achieved from 1000 h. This study elucidates the degradation mechanisms of high-power GaN LDs and provides an effective technology to extend their lifespan, thereby prompting the practical applications of high-power LDs.","PeriodicalId":7263,"journal":{"name":"Advanced Photonics Research","volume":"5 11","pages":""},"PeriodicalIF":3.7,"publicationDate":"2024-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/adpr.202400119","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142579759","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Maximizing the Electromagnetic Efficiency of Spintronic Terahertz Emitters 最大化自旋电子太赫兹发射器的电磁效率

IF 3.7

Advanced Photonics Research Pub Date : 2024-09-04 DOI: 10.1002/adpr.202400064

Pierre Koleják, Geoffrey Lezier, Daniel Vala, Baptiste Mathmann, Lukáš Halagačka, Zuzana Gelnárová, Yannick Dusch, Jean-François Lampin, Nicolas Tiercelin, Kamil Postava, Mathias Vanwolleghem

{"title":"Maximizing the Electromagnetic Efficiency of Spintronic Terahertz Emitters","authors":"Pierre Koleják, Geoffrey Lezier, Daniel Vala, Baptiste Mathmann, Lukáš Halagačka, Zuzana Gelnárová, Yannick Dusch, Jean-François Lampin, Nicolas Tiercelin, Kamil Postava, Mathias Vanwolleghem","doi":"10.1002/adpr.202400064","DOIUrl":"https://doi.org/10.1002/adpr.202400064","url":null,"abstract":"\u0000Optically pumped spintronic terahertz emitters (STEs) have, in less than a decade, strongly impacted terahertz (THz) source technology, by the combination of their Fourier-limited ultrafast response, their phononless emission spectrum and their wavelength-independent operation. However, the intrinsic strength of the inverse spin Hall effect governing these devices introduces a challenge: the optical-to-terahertz conversion efficiency is considerably lower than traditional sources. It is therefore primordial to maximize at least their electromagnetic efficiency independently of the spin dynamics at play. Using a rigorous time-domain treatment of the electromagnetic generation and extraction processes, an optimized design is presented and experimentally confirmed. With respect to the strongest reported spintronic THz emitters it achieves a 250% enhancement of the emitted THz field and therefore an 8 dB increase of emitted power. This experimental achievement brings STE close to the symbolic barrier of mW levels. The design strategy is generically applicable to any kind of ultrafast spin-to-charge conversion (S2C) system. On a broader level, our work highlights how a rigorous handling of the purely electromagnetic aspects of THz spintronic devices can uncover overlooked aspects of their operation and lead to substantial improvements.","PeriodicalId":7263,"journal":{"name":"Advanced Photonics Research","volume":"5 11","pages":""},"PeriodicalIF":3.7,"publicationDate":"2024-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/adpr.202400064","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142579738","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Formation Mechanisms and Fluorescence Properties of Carbon Dots in Coal Burning Dust from Coal-Fired Power Plants 燃煤电厂燃煤粉尘中碳点的形成机理和荧光特性

IF 3.7

Advanced Photonics Research Pub Date : 2024-09-02 DOI: 10.1002/adpr.202400010

Zhexian Zhao, Weizuo Zhang, Jin Zhang, Yuzhao Li, Han Bai, Fangming Zhao, Zhongcai Jin, Ju Tang, Yiming Xiao, Wen Xu, Yanfei Lü

{"title":"Formation Mechanisms and Fluorescence Properties of Carbon Dots in Coal Burning Dust from Coal-Fired Power Plants","authors":"Zhexian Zhao, Weizuo Zhang, Jin Zhang, Yuzhao Li, Han Bai, Fangming Zhao, Zhongcai Jin, Ju Tang, Yiming Xiao, Wen Xu, Yanfei Lü","doi":"10.1002/adpr.202400010","DOIUrl":"https://doi.org/10.1002/adpr.202400010","url":null,"abstract":"Carbon dots (CDs) show great application potential with their unique and excellent performances. Coal and its derivatives are rich in aromatic ring structure, which is suitable for preparing CDs in microstructure. Coal-burning dust from coal-fired power plants can be utilized as a rich resource to separate and extract CDs. It is shown in the results that there are two main possible mechanisms for the formation of CDs in coal-burning dust. One is the self-assembly of polycyclic aromatic hydrocarbons contained in coal or produced by incomplete combustion of coal. The other mechanism is that the bridge bonds linking different aromatic structures in coal break, which will form CDs with different functional groups when the coals burn at high temperature. Under violet light excitation at 310–340 nm or red light at 610–640 nm, CDs extracted from coal-burning dust can emit purple fluorescence around 410 nm. The mechanism of up-conversion fluorescence emission of CDs is due to a two-photon absorption process. The recycling of CDs from coal-burning dust from coal-fired power plants are not only good to protect environment but will also be helpful for mass production of CDs.","PeriodicalId":7263,"journal":{"name":"Advanced Photonics Research","volume":"5 10","pages":""},"PeriodicalIF":3.7,"publicationDate":"2024-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/adpr.202400010","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142435231","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0