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2014 11th China International Forum on Solid State Lighting (SSLCHINA)最新文献

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The diffusion of Ag in GaN-based surface plasmon light-emitting diodes under different temperature annealing 不同退火温度下银在氮化镓基表面等离子体发光二极管中的扩散
2014 11th China International Forum on Solid State Lighting (SSLCHINA) Pub Date : 2014-11-01 DOI: 10.1109/SSLCHINA.2014.7127237
Lei Liu, Lixia Zhao, Zhiguo Yu, Jun-xi Wang, Y. Zeng, Jin-min Li
{"title":"The diffusion of Ag in GaN-based surface plasmon light-emitting diodes under different temperature annealing","authors":"Lei Liu, Lixia Zhao, Zhiguo Yu, Jun-xi Wang, Y. Zeng, Jin-min Li","doi":"10.1109/SSLCHINA.2014.7127237","DOIUrl":"https://doi.org/10.1109/SSLCHINA.2014.7127237","url":null,"abstract":"In order to achieve effective coupling between the surface plasmon and the quantum wells (QWs) for surface plasmon LEDs, metal-embedded or thin p-GaN layer approach have been normally been used, but by taking either of these methods, the enhancement of the IQE of the fabricated SP-LEDs is not remarkable, in some cases, the internal quantum efficiency even decreases. Here, this study is to clarify the origin and understand what kind of influence of temperature treatment to the LED structure. GaN based LEDs with Ag from the same epitaxial wafer were annealed under different temperatures to imitate the high temperature treatment during the SP-LED fabrication. The results show that the diffusion of Ag into the quantum wells could be one of the reasons and in order to realize SP-LEDs with high IQE, high temperature treatments need to be avoided to prevent the diffusion of metal.","PeriodicalId":361141,"journal":{"name":"2014 11th China International Forum on Solid State Lighting (SSLCHINA)","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127077613","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Surface plasmon enhanced GaN based light-emitting diodes by Ag/SiO2 nanoparticles Ag/SiO2纳米颗粒表面等离子体增强GaN基发光二极管
2014 11th China International Forum on Solid State Lighting (SSLCHINA) Pub Date : 2014-11-01 DOI: 10.1109/SSLCHINA.2014.7127232
Shichao Zhu, Lixia Zhao, Zhiguo Yu, Xuejiao Sun, Jun-xi Wang, Jin-min Li
{"title":"Surface plasmon enhanced GaN based light-emitting diodes by Ag/SiO2 nanoparticles","authors":"Shichao Zhu, Lixia Zhao, Zhiguo Yu, Xuejiao Sun, Jun-xi Wang, Jin-min Li","doi":"10.1109/SSLCHINA.2014.7127232","DOIUrl":"https://doi.org/10.1109/SSLCHINA.2014.7127232","url":null,"abstract":"The QW-SP coupled nanorod LED with Ag/SiO2 nanoparticals (Nps) was fabricated. From both the light emission and the transmission spectrum, the energy coupling effects have been verified. The PL intensity of SP coupled LED increased by 2.1 times compared with the reference sample, combined with a blue shift of 2 nm from 456 to 454 nm. Furthermore, the time resolved photoluminescence (TRPL) results also confirm that the QW-SP coupling can enhance the carrier spontaneous emission rate dramatically. Our finding gives an alternative solution to fabricate QW-SP coupled LEDs to realize both high-power and high-speed.","PeriodicalId":361141,"journal":{"name":"2014 11th China International Forum on Solid State Lighting (SSLCHINA)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123588935","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Large batch etching of sapphire wafers to achieve high throughput and low cost of ownership 蓝宝石晶圆的大规模蚀刻，以实现高吞吐量和低拥有成本
2014 11th China International Forum on Solid State Lighting (SSLCHINA) Pub Date : 2014-11-01 DOI: 10.1109/SSLCHINA.2014.7127212
Stephanie Baclet, Mathew Loveday, A. Newton, M. Dineen
{"title":"Large batch etching of sapphire wafers to achieve high throughput and low cost of ownership","authors":"Stephanie Baclet, Mathew Loveday, A. Newton, M. Dineen","doi":"10.1109/SSLCHINA.2014.7127212","DOIUrl":"https://doi.org/10.1109/SSLCHINA.2014.7127212","url":null,"abstract":"Formation of cone shaped sapphire features has been studied using the newly developed plasma etcher PlasmaPro 1000 Astrea from Oxford Instruments Plasma Technology. This new etcher uses a large Transformer Coupled Plasma (TCP) source which generates a high ion density. Patterned sapphire etching rate up to 120nm/min could be obtained using a BCl3 based chemistry. Control of the process settings has allowed demonstrating cone shape features with height up to 2um, smooth sidewalls and no trenching. Uniform etching within wafer and across batches of 48 × 2\" and 14 × 4\" substrates has been achieved with etch rates >60nm/min and selectivity >0.7:1.","PeriodicalId":361141,"journal":{"name":"2014 11th China International Forum on Solid State Lighting (SSLCHINA)","volume":"173 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124235000","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Analysis of the failure mechanisms for LED display and the preventive solutions LED显示屏失效机理分析及预防措施
2014 11th China International Forum on Solid State Lighting (SSLCHINA) Pub Date : 2014-11-01 DOI: 10.1109/SSLCHINA.2014.7127222
Mengxin Mu
{"title":"Analysis of the failure mechanisms for LED display and the preventive solutions","authors":"Mengxin Mu","doi":"10.1109/SSLCHINA.2014.7127222","DOIUrl":"https://doi.org/10.1109/SSLCHINA.2014.7127222","url":null,"abstract":"In this paper, we mainly analyze the main failure mechanism of SMD LEDs' which are applied for LED display. We carefully analyze SMD LEDs' wet stress, thermal stress, antistatic ability, hidden troubles of the circuit of LED display screen, the defects of led display screen's production engineering. And based on the above analysis, we put forward feasible preventive solutions.","PeriodicalId":361141,"journal":{"name":"2014 11th China International Forum on Solid State Lighting (SSLCHINA)","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126411583","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Optical system design of spectrum switchable jaundice phototherapy apparatus based on high-brightness LED 基于高亮度LED的光谱可切换黄疸光疗仪光学系统设计
2014 11th China International Forum on Solid State Lighting (SSLCHINA) Pub Date : 2014-11-01 DOI: 10.1109/SSLCHINA.2014.7127219
Peipei Wang, Xi-bin Yang, Yong Liang, Zhiliang Jin, Long Zhang, D. Xiong, Xiaodong Wu
{"title":"Optical system design of spectrum switchable jaundice phototherapy apparatus based on high-brightness LED","authors":"Peipei Wang, Xi-bin Yang, Yong Liang, Zhiliang Jin, Long Zhang, D. Xiong, Xiaodong Wu","doi":"10.1109/SSLCHINA.2014.7127219","DOIUrl":"https://doi.org/10.1109/SSLCHINA.2014.7127219","url":null,"abstract":"Neonatal jaundice could occur in most newborn infants. Phototherapy is a widely used treatment for it. Blue and green narrow-band LED chips, with central wavelength 460nm and 505nm, are selected for reliable and effective phototherapy. To meet the requirement of irradiance and uniformity, two different optical design schemes for neonatal jaundice phototherapy apparatus are proposed in this paper. The first design uses 13 LED modules arranged in a specific order while the other one is based on a pair of specially designed fly-eye lens optical systems. The simulation and experimental results indicate that phototherapy equipments designed in this paper have advantages in effective spectral range, illumination intensity and uniformity over those traditional ones.","PeriodicalId":361141,"journal":{"name":"2014 11th China International Forum on Solid State Lighting (SSLCHINA)","volume":"112 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127986451","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
The design of the wireless intelligent lighting control system 无线智能照明控制系统的设计
2014 11th China International Forum on Solid State Lighting (SSLCHINA) Pub Date : 2014-11-01 DOI: 10.1109/SSLCHINA.2014.7127207
Meng Zhiguo, Jie Guangchun
{"title":"The design of the wireless intelligent lighting control system","authors":"Meng Zhiguo, Jie Guangchun","doi":"10.1109/SSLCHINA.2014.7127207","DOIUrl":"https://doi.org/10.1109/SSLCHINA.2014.7127207","url":null,"abstract":"To intelligently control and adjust LED lighting network system, to make use of the sensor technology, wireless communication protocol, intelligent control technology, it overcomes the difference of the various technical standard, the lack of communication that is problem to impede the promotion of the intelligent lighting. Extending the conventional control method with intelligent technology, planning scheme according to the functions, the design carried out the three respectively subsystems, then the debugging and fusion of the software and hardware. By using the method of software, the high or low level of I/O output can simulate PWM control signal whose duty cycle of the PWM can be adjusted. The brightness data collected from the environment is changed into PWM control information. Using acoustic sensors and temperature sensors and voltage sensors to further adjust the distribution curves of the light and color, these collected data are turned into PWM fine tuning signal. The wireless intelligent lighting control system designed can well solve problems such as the large regional span, the high cost of the network transmission and the uncertain of the node number.","PeriodicalId":361141,"journal":{"name":"2014 11th China International Forum on Solid State Lighting (SSLCHINA)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132216091","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Extremely low cost and highly integration LED driver 极低的成本和高度集成的LED驱动器
2014 11th China International Forum on Solid State Lighting (SSLCHINA) Pub Date : 2014-11-01 DOI: 10.1109/SSLCHINA.2014.7127213
Deng Jian, Han Yunlong, Huang Qiu-kai
{"title":"Extremely low cost and highly integration LED driver","authors":"Deng Jian, Han Yunlong, Huang Qiu-kai","doi":"10.1109/SSLCHINA.2014.7127213","DOIUrl":"https://doi.org/10.1109/SSLCHINA.2014.7127213","url":null,"abstract":"This paper presents a LED driver implementing several novel techniques, which are self bias supply, accurate LED open circuit protection and highly integration of silicon components. These techniques helps LED driver to achieve extremely low cost and have a minimal parts count, thus offers a better solution for LED lighting system.","PeriodicalId":361141,"journal":{"name":"2014 11th China International Forum on Solid State Lighting (SSLCHINA)","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116175664","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Wafer-level light emitting diode (WL-LED): An innovative approach for cost-effective very high power lighting 晶圆级发光二极管(WL-LED):一种具有成本效益的高功率照明创新方法
2014 11th China International Forum on Solid State Lighting (SSLCHINA) Pub Date : 2014-11-01 DOI: 10.1109/SSLCHINA.2014.7127240
Y. Cai, Y. Zhang, F. Xu, D. Zhao, H. J. Huang, W. Wang, J. W. Xu, G. Shi, B. S. Zhang
{"title":"Wafer-level light emitting diode (WL-LED): An innovative approach for cost-effective very high power lighting","authors":"Y. Cai, Y. Zhang, F. Xu, D. Zhao, H. J. Huang, W. Wang, J. W. Xu, G. Shi, B. S. Zhang","doi":"10.1109/SSLCHINA.2014.7127240","DOIUrl":"https://doi.org/10.1109/SSLCHINA.2014.7127240","url":null,"abstract":"A very high power wafer level light emitting diode (WL-LED) has been successfully fabricated on 2 inches InGaN/GaN epi-wafer based on high voltage design. The maximum light output power (LOP) was measured to be 157W with an external quantum efficiency (EQE) of 24%.","PeriodicalId":361141,"journal":{"name":"2014 11th China International Forum on Solid State Lighting (SSLCHINA)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123902811","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Methods of extrapolation of the LED life time and their comparison based on some LED degradation curves 基于LED劣化曲线的LED寿命外推方法及比较
2014 11th China International Forum on Solid State Lighting (SSLCHINA) Pub Date : 2014-11-01 DOI: 10.1109/SSLCHINA.2014.7127242
Max Wagner, T. Khanh
{"title":"Methods of extrapolation of the LED life time and their comparison based on some LED degradation curves","authors":"Max Wagner, T. Khanh","doi":"10.1109/SSLCHINA.2014.7127242","DOIUrl":"https://doi.org/10.1109/SSLCHINA.2014.7127242","url":null,"abstract":"The degradation of luminous flux of LEDs is dependent on the type of LED and its operation conditions. That is why a prediction of lifetime often differs from case to case. Mostly, the testing times are too short to reach 70 or 80% of the beginning luminous flux. So extrapolation has to be used to predict the lifetime. In this study different methods and mathematical functions are compared.","PeriodicalId":361141,"journal":{"name":"2014 11th China International Forum on Solid State Lighting (SSLCHINA)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122338783","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Reliability analysis and design of road lamp control system based on ZigBee wireless communication 基于ZigBee无线通信的路灯控制系统可靠性分析与设计
2014 11th China International Forum on Solid State Lighting (SSLCHINA) Pub Date : 2014-11-01 DOI: 10.1109/SSLCHINA.2014.7127218
Xiaoming Geng, Y. Wen
{"title":"Reliability analysis and design of road lamp control system based on ZigBee wireless communication","authors":"Xiaoming Geng, Y. Wen","doi":"10.1109/SSLCHINA.2014.7127218","DOIUrl":"https://doi.org/10.1109/SSLCHINA.2014.7127218","url":null,"abstract":"In recent years, as the use of LED streetlamp grows, more and more companies have begun to develop streetlamp control systems. Reliability is one of the key issues when these new products are developed. Basically, high failure rates and lower connectivity rates in lamp controllers can negatively affect the user experience and lessen the acceptance of LED products in the marketplace. In this paper, the authors look at this system, including system planning, design, engineering and maintenance, and suggest ways for improving the user's experience. New products, such as central stations and controllers, are developed and used in many real-life applications. During the design process and use of these products, some methods are offered to handle many malfunctions, cut the system failure rate and create greater user satisfaction.","PeriodicalId":361141,"journal":{"name":"2014 11th China International Forum on Solid State Lighting (SSLCHINA)","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125118887","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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