Results 61 to 70 of about 9,229,760 (269)

Operation Problems of Solar Panel Caused by the Surface Contamination

Energies, 2021
Solar panels have been widely criticized for their weather dependence and slowly improving efficiency. Several external factors can further increase the efficiency of solar panels, e.g., shading effect and surface contamination.
Dávid Matusz-Kalász, István Bodnár
doaj   +1 more source

Subcell‐Resolved Electroluminescence Imaging of Monolithic Perovskite/Silicon Tandem Solar Cell for High‐Throughput Characterization

Solar RRL
In the midterm future, the photovoltaic industry is expected to be dominated by two‐terminal (2T) perovskite–silicon (pero–Si) tandem solar cells, which have high energy conversion efficiency and require characterization for large‐scale production ...
I. Djeukeu, Jonas Horn, M. Meixner, Enno Wagner, S. Glunz, Klaus Ramspeck   +5 more
semanticscholar   +1 more source

Residual Tetramethylammonium Hydroxide Limits ZnO Nanoparticle‐Based Quantum Dot Light‐Emitting Diode Performance

Advanced Optical Materials, EarlyView.
Residual tetramethylammonium hydroxide (TMAH) from ZnO nanoparticle (NP) synthesis is uncovered as a hidden impurity that migrates into quantum dot emissive layers during thermal processing. The resulting exciton quenching reduces the efficiency of quantum dot light‐emitting diodes despite improved electron transport upon annealing.
Ganghyun Park, Joonyeon Hwang, Hayeon Seo, Jisu Hwang, Jinsu Park, Wan Ki Bae, Jeonghun Kwak   +6 more
wiley   +1 more source

Dynamics of space charge and electroluminescence modelling in polyethylene

, 2012
Space charge has been recognized as an important factor contributing to the electrical failure of the cable insulation. Extensive efforts have been made to investigate space charge dynamics within polymeric insulations under electric stresses.
Zhao, Junwei
core   +1 more source

Identifying and investigating spatial features in InGaAs solar cells by hyperspectral luminescence imaging

AIP Advances, 2023
Hyperspectral luminescence imaging adds high-resolution spectral data to the electroluminescence and photoluminescence images of photovoltaic materials and devices.
Brianna Conrad, Behrang H. Hamadani
doaj   +1 more source

Self‐Sustaining Sensing Systems: Integration Strategies and Signal–Power Matching in Energy‐Harvesting Electronics

Advanced Science, EarlyView.
Energy‐harvesting‐integrated sensors couple ambient energy conversion with sensing, processing, and wireless communication. This review organizes recent progress through integration architectures and operating principles, revisiting co‐packaged, monolithic, and co‐functional designs together with always‐on, event‐driven, and multi‐modal sensing modes ...
Taehyun Park, Ki‐Yoon Park, Yeonho Choi, Dong‐Myeong Shin, Hong‐Joon Yoon, Hocheon Yoo   +5 more
wiley   +1 more source

Assessment of Internal Power Losses in Photovoltaic Cells Using an Adaptive Neuro-Fuzzy Inference System Based on Electroluminescence

Sci
Series resistance (Rs) is a key parameter that limits photovoltaic cell performance; however, its conventional estimation from current–voltage measurements requires electrical contact and controlled testing conditions.
Mario Eduardo Carbonó dela Rosa, Mario A. Millan-Franco, Jesús E. Diosa, Wilson Lopera, Edgar Mosquera-Vargas   +4 more
doaj   +1 more source

Solvent‐Free Synthesis of Ultrabright Carbon Dots With Near‐Unity Quantum Yield for High‐Performance Light‐Emitting Diodes

Advanced Science, EarlyView.
A rational, solvent‐free synthesis utilizing 2,6‐diaminonaphthalene produces ultrabright green‐emissive carbon dots. Regulated by a self‐limiting oxidative capping mechanism, excitons undergo ultrafast intra‐particle funneling from the nitrogen‐doped carbon core to emissive surface traps.
Hyeonjin Park, Su Hwan Lee, Sejeong Seo, Soye Park, Soo min Ji, Hyunda Jo, Sehyeon Park, Young‐Hoon Kim, Woosung Kwon   +8 more
wiley   +1 more source

Spectrum Analysis Enabled Periodic Feature Reconstruction Based Automatic Defect Detection System for Electroluminescence Images of Photovoltaic Modules

Micromachines, 2022
Electroluminescence (EL) imaging is a widely adopted method in quality assurance of the photovoltaic (PV) manufacturing industry. With the growing demand for high-quality PV products, automatic inspection methods based on machine vision have become an ...
Jiachuan Yu, Yuan Yang, Hui Zhang, Han Sun, Zhisheng Zhang, Zhijie Xia, Jianxiong Zhu, Min Dai, Haiying Wen   +8 more
doaj   +1 more source

Cavity‐Compatible Light Extraction in Top‐Emitting Microcavity OLEDs via a Gentle Internal Corrugation Layer and Resonance‐Matched Narrowband Emission

Advanced Science, EarlyView.
A gentle internal corrugation layer conformally reshapes the microcavity OLED stack, redistributing confined optical power toward extractable channels while preserving cavity‐controlled emission. Combined with optical clear resin and a resonance‐matched narrowband pTSF emissive system, this cavity‐compatible architecture delivers an external quantum ...
Young Rok Kim, Ajay Nimbalkar, Min Chul Suh   +2 more
wiley   +1 more source