Journal of Photonics for Energy最新文献_第10页

Design and development of outdoor daylight ultraviolet fluorescence imaging setup: an inexpensive tool to detect degradation of photovoltaic modules 户外日光紫外线荧光成像装置的设计和开发：一种检测光伏组件退化的廉价工具

IF 1.7 4区工程技术

Journal of Photonics for Energy Pub Date : 2021-03-13 DOI: 10.1117/1.JPE.11.025501

S. Ilyas, M. Noman, Fazle Samad, Bushra Mahnoor, S. Tatapudi, F. Zafar, Govindasami Tamizhmani

{"title":"Design and development of outdoor daylight ultraviolet fluorescence imaging setup: an inexpensive tool to detect degradation of photovoltaic modules","authors":"S. Ilyas, M. Noman, Fazle Samad, Bushra Mahnoor, S. Tatapudi, F. Zafar, Govindasami Tamizhmani","doi":"10.1117/1.JPE.11.025501","DOIUrl":"https://doi.org/10.1117/1.JPE.11.025501","url":null,"abstract":"Abstract. Ultraviolet fluorescence (UVF) imaging is a widely used technique to analyze encapsulant discoloration, which is one of the prominent degradation modes in photovoltaic (PV) modules. Conventionally, UVF is done during nighttime or in a dark room, but performing UVF imaging during nighttime causes several inconveniences including safety due to snakes and other animals and inconvenient scheduling issues for the plant owners. Similarly, performing UVF imaging indoors requires dismounting the modules from the racks and moving them to the laboratory, which are labor-intensive and time-consuming tasks and could damage the module or may cause the energy loss due to partial/complete plant/array shutdown. Moreover, the manufacturer/installer warranty may be voided if the modules are removed from the racks. An outdoor UVF setup that can be used during the daylight can be a better alternative to the indoor or nighttime setup, provided it ensures there is no leakage of ambient light into the covered testing structure. We propose a unique, portable, and user-friendly outdoor UVF setup design that can tackle the issue of the ambient light leaking in, give uniform UV light, and provide enough room to accommodate the UV light source and camera to capture module images. We also classify the encapsulant discoloration into three classes depending on the discoloration intensity level. Furthermore, using the image processing technique, the percentage of browning was calculated in each cell/module.","PeriodicalId":16781,"journal":{"name":"Journal of Photonics for Energy","volume":"11 1","pages":"025501 - 025501"},"PeriodicalIF":1.7,"publicationDate":"2021-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49108252","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

From “old” photons to “new” photons: advancing new research in photonics and energy 从“旧”光子到“新”光子:推进光子和能源的新研究

IF 1.7 4区工程技术

Journal of Photonics for Energy Pub Date : 2021-02-25 DOI: 10.1117/1.JPE.11.010101

S. Shaheen

引用次数: 0

Numerical investigation on the optical properties of TiO2 photocatalyst suspension by light scattering model of particulate aggregates 基于颗粒聚集体光散射模型的TiO2光催化剂悬浮液光学性质的数值研究

IF 1.7 4区工程技术

Journal of Photonics for Energy Pub Date : 2021-01-01 DOI: 10.1117/1.JPE.11.016501

Yuanchang Du, Maochang Liu, Liejin Guo

引用次数: 2

Absorption improvement of a-Si/c-Si rectangular nanowire arrays in ultrathin solar cells 超薄太阳能电池中a-Si/c-Si矩形纳米线阵列的吸收改善

IF 1.7 4区工程技术

Journal of Photonics for Energy Pub Date : 2021-01-01 DOI: 10.1117/1.JPE.11.014502

S. L. Mortazavifar, M. Salehi, M. Shahraki, E. Abiri

引用次数: 7

Sb2S3 surface modification for improved photoelectrochemical water splitting performance of BiVO4 photoanode Sb2S3表面改性改善BiVO4光阳极的光电化学分水性能

IF 1.7 4区工程技术

Journal of Photonics for Energy Pub Date : 2021-01-01 DOI: 10.1117/1.JPE.11.016502

Yumeng Lu, Zhiqiang Wang, Jinzhan Su

引用次数: 1

Ce:Nd:YAG side-pumped solar laser Ce:Nd:YAG侧泵浦太阳能激光器

IF 1.7 4区工程技术

Journal of Photonics for Energy Pub Date : 2021-01-01 DOI: 10.1117/1.JPE.11.018001

C. Vistas, D. Liang, J. Almeida, B. Tibúrcio, D. Garcia, M. Catela, H. Costa, E. Guillot

{"title":"Ce:Nd:YAG side-pumped solar laser","authors":"C. Vistas, D. Liang, J. Almeida, B. Tibúrcio, D. Garcia, M. Catela, H. Costa, E. Guillot","doi":"10.1117/1.JPE.11.018001","DOIUrl":"https://doi.org/10.1117/1.JPE.11.018001","url":null,"abstract":"Abstract. A significant advancement in the Ce:Nd:YAG solar laser performance using a side-pumping configuration is reported. A solar laser head was composed of a double-stage semispherical lens and a trapezoidal-shaped pumping cavity, which coupled and redistributed the concentrated solar radiation from the focal zone of a parabolic mirror into a laser rod. The laser output performance of a 4.0-mm diameter, 35-mm length Ce:Nd:YAG laser rod was tested and compared with that from a Nd:YAG rod with the same dimensions. At an incoming solar power of 600 W, the Ce:Nd:YAG solar laser achieved 23.6-W / m2 collection efficiency, 4.4% slope efficiency, and 2.8% solar-to-laser power conversion efficiency, which are 1.57, 1.47, and 1.56 times, respectively, higher than the ones obtained with the Nd:YAG rod. The Ce:Nd:YAG side-pumped solar laser has also 1.39 and 1.15 times more collection efficiency and solar-to-laser power conversion efficiency, respectively, than the previous record by Nd:YAG side-pumped solar laser. We demonstrate the great potential of the Ce:Nd:YAG ceramic rod as a gain medium for side-pumped solar lasers.","PeriodicalId":16781,"journal":{"name":"Journal of Photonics for Energy","volume":"11 1","pages":"018001 - 018001"},"PeriodicalIF":1.7,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43359402","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 19

Spectral filtering of sub-bandgap radiation using all-dielectric gratings for thermophotovoltaic applications 用于热光伏应用的全介质光栅亚带隙辐射的光谱滤波

IF 1.7 4区工程技术

Journal of Photonics for Energy Pub Date : 2021-01-01 DOI: 10.1117/1.JPE.11.015501

M. S. Gupta, E. Ameen, S. Unnikrishnakurup, K. Balasubramaniam, A. Veeraragavan, B. Pesala

{"title":"Spectral filtering of sub-bandgap radiation using all-dielectric gratings for thermophotovoltaic applications","authors":"M. S. Gupta, E. Ameen, S. Unnikrishnakurup, K. Balasubramaniam, A. Veeraragavan, B. Pesala","doi":"10.1117/1.JPE.11.015501","DOIUrl":"https://doi.org/10.1117/1.JPE.11.015501","url":null,"abstract":"Abstract. Filtering of the sub-band spectral radiation is an attractive technique to overcome the lower efficiencies of direct conversion thermophotovoltaic technology. The poor performance of these systems is due to the relatively small portion of the incident energy being above the bandgap of photovoltaic cell. To effectively filter the majority of the sub-bandgap radiation and re-employ it as regenerative heat, a viable solution is to design an efficient spectrally selective filter ideally matched to the photovoltaic cell’s bandgap. Here, we have explored a high contrast amorphous silicon grating on a quartz substrate. Quartz due to its inherent nature inhibits transmission of sub-band gap radiation in the infrared (IR) region (>4.75 μm), whereas gratings further filter radiation above 1.8 μm suitable for GaSb photovoltaic cell. The optimized filter is fabricated using direct write laser lithography, and optical characterization result shows that 72% of incident radiation in unconvertible region (>1.80 μm) is filtered and recycled. Further, the thermal characterization results of IR filter carried out using a ceramic heater has shown the drop in effective temperature from 1074.9 to 813.2 K in above bandgap region. This suppressed radiation has contributed to an absolute increase in source body temperature by 16.0 K resulting in increase in the above bandgap radiation available for thermophotovoltaic conversion. The proposed spectral filtering design can be tailored to solar cells of any bandgap and is scalable for employment in various thermophotovoltaic applications.","PeriodicalId":16781,"journal":{"name":"Journal of Photonics for Energy","volume":"11 1","pages":"015501 - 015501"},"PeriodicalIF":1.7,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42609176","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 5

Study on the optical characteristics of gradient Al component AlGaN nanowires for ultraviolet photocathode 用于紫外光电阴极的梯度Al组分AlGaN纳米线的光学特性研究

IF 1.7 4区工程技术

Journal of Photonics for Energy Pub Date : 2021-01-01 DOI: 10.1117/1.JPE.11.014501

Zhisheng Lv, Lei Liu, X. Zhangyang, F. Lu, Jian Tian

引用次数: 0

Detailed-balance efficiency limits of two-terminal perovskite/silicon tandem solar cells with planar and Lambertian spectral splitters 具有平面和朗伯分光器的双端钙钛矿/硅串联太阳能电池的详细平衡效率极限

IF 1.7 4区工程技术

Journal of Photonics for Energy Pub Date : 2020-12-23 DOI: 10.1117/1.JPE.12.015502

V. Neder, Stefan W. Tabernig, A. Polman

引用次数: 1

Extending the concept of edge collection function to polygonal and curved planar luminescent waveguides 将边缘收集函数的概念扩展到多边形和曲面平面发光波导