Results 81 to 90 of about 1,595 (209)

Intelligent defect detection in electroluminescence images of photovoltaic modules using MobileNetV2 [PDF]

BIO Web of Conferences
With the rapid growth of the photovoltaic (PV) industry, fast and accurate defect-detection techniques are becoming increasingly important. Manual inspection of PV modules using electroluminescence (EL) imaging is time-consuming and prone to errors. This
Benjelloul Inasse, Bouali Hicham
doaj   +1 more source

ZnO Nanowires by Chemical Bath Deposition: A Review on Doping and Functional Devices

Electron, EarlyView.
This review reports the most recent and well‐established state‐of‐the‐art and scientific challenges related to the doping of ZnO nanowires by chemical bath deposition, encompassing native point and hydrogen‐related defects, as well as extrinsic dopants.
Clément Lausecker, Adrien Baillard, Estelle Appert, Vincent Consonni   +3 more
wiley   +1 more source

Flexible white thermally activated delayed fluorescence polymer with alkyl spacer and side‐chain encapsulation for efficient solution‐processed white organic light‐emitting diodes

FlexMat, EarlyView.
A “gemstone‐necklace” FASCE strategy synthesizes single‐component white polymers (PTF‐Qx) by alternating rigid TADF units with flexible alkyl chains. The non‐doped rigid device achieves a high EQE of 15.66% with stable white emission (CIE: 0.36, 0.46).
Wenhao Zhang, Hongyu Zhuang, Xinxin Ban, Shilong Feng, Tao Xu, Youqiang Qian, Shun Hu, Aiyun Zhu   +7 more
wiley   +1 more source

Spirobifluorene fusion in multiple resonance frameworks enables efficient pure‐red OLEDs with narrowband emission and suppressed efficiency roll‐off

FlexMat, EarlyView.
An orthogonal spirobifluorene‐fusion strategy is introduced for B/N/O‐alternated MR frameworks, enabling improved kRISC (5.46 × 103 s−1), high ΦPL (97%), and narrow‐band pure‐red emission. Vacuum‐evaporated OLEDs incorporating this emitter achieve an EQEmax >40% (FWHM = 36 nm) and exhibit exceptionally low efficiency roll‐off at high luminance ...
Yan‐Yun Jing, Han Wu, Xiaoling Xu, Sijie Xian, Jingsheng Miao, Xiaojun Yin, Chuluo Yang, Xiaosong Cao   +7 more
wiley   +1 more source

Segmentation of Photovoltaic Module Cells in Electroluminescence Images

, 2021
High resolution electroluminescence (EL) images captured in the infrared spectrum allow to visually and non-destructively inspect the quality of photovoltaic (PV) modules. Currently, however, such a visual inspection requires trained experts to discern different kinds of defects, which is time-consuming and expensive. Automated segmentation of cells is
Deitsch, sergiu, Buerhop-Lutz, Claudia, Sovetkin, Evgenii, Steland, ansgar, Maier, Andreas, Gallwitz, Florian, Riess, Christian   +6 more
openaire   +1 more source

Fluorene‐based blue emitters: On the path to electrically pumped organic lasers

FlexMat, EarlyView.
Electrically pumped efficient operation remains unrealized, a major challenge in optoelectronics. Fluorene‐based blue‐emitting semiconductors are promising gain media, thanks to their structural tunability and favorable emission properties. This review summarizes recent advances, highlights their reliability and versatility in lasing, and outlines key ...
Yong Yan, Hao Li, Mengna Yu, Huiyin Wang, Jiangqiang He, Menghan Wu, Quanyou Feng, Linghai Xie   +7 more
wiley   +1 more source

Graphene oxide/exfoliated black phosphorus van der Waals heterojunctions for PEDOT:PSS‐free‐based organic light‐emitting diodes achieving excellent electroluminescence performance

FlexMat, EarlyView.
A novel two‐dimensional heterojunction assembled from graphene oxide and exfoliated black phosphorus via van der Waals interactions is proposed to replace widely used poly(3,4‐ethylenedioxythiophene)‐polystyrene sulfonate for efficient hole injection layer in organic light‐emitting diodes, achieving impressive electroluminescence performance.
Yuefeng Li, Xiaozhen Wei, Ruihao Yang, Shuyu Li, Jingkun Wang, Min Zhao, Yanqin Miao, Yuying Hao, Hua Wang, Kunping Guo   +9 more
wiley   +1 more source

Lead‐free halide perovskites for efficient light‐emitting devices

FlexMat, EarlyView.
Overview of Lead‐free metal halide perovskites with different categories and optoelectronic application directions, including solid‐state lighting, light‐emitting diodes, piezoluminescence, flexible electronics, scintillators and CPL emitters. Abstract Lead halide perovskites exhibit promising optoelectronic properties for optoelectronic applications ...
Yueqi Shen, Kefan Meng, Yiqi Zhao, Chaoran Zhou, Jiaye Shu, Di Zhang, Chengqian Cao, Wanxin Chen, Yefeng Zhou, Weihua Ning   +9 more
wiley   +1 more source

Experimental Study on Classification of Solar Cell Defects from Electroluminescence Imaging Based on Deep Convolutional Neural Networks

Kongzhi Yu Xinxi Jishu
Electroluminescence (EL) imaging can sensitively reflect internal defects in solar cells, yet analyzing these images presents challenges due to high complexity, defect diversity, and large data volumes. To address the lack of criteria for model selection
BI Ying, ZHANG Rongqiao, CHANG Yaxin, ZHANG Tuo   +3 more
doaj  

Correlation Between Broken Contact Fingers and I–V Characteristics of Partially Shaded Photovoltaic Modules

Solar
This paper reports on the correlation between broken contact fingers and the shape of the current–voltage (I–V) curve of a photovoltaic (PV) module. It was found that the broken contact fingers of a solar cell in the PV module cause a noticeable change ...
Abdulhamid Atia, Fatih Anayi, Ali Bahr, Gao Min   +3 more
doaj   +1 more source