Results 31 to 40 of about 1,986 (212)

Transparent Perovskite Light‐Emitting Diodes with Conductive Oxide Top Electrodes

Advanced Materials, EarlyView.
Transparent perovskite light‐emitting diodes (TrPeLEDs) enable simultaneous display and transparency, expanding application possibilities. Using a metal oxide buffer layer and pulsed laser deposition, TrPeLEDs with diverse compositions and architectures are demonstrated.
Michele Forzatti, Sergio Martínez‐Saiz, Morena Cervino, Edoardo Stanzani, Sandra Jenatsch, Qingsen Zeng, Joo Sung Kim, Dong‐Hyeok Kim, Eojin Yoon, Tae‐Woo Lee, Daniel Tordera, Henk J. Bolink   +11 more
wiley   +1 more source

Efficiency Droop Improvement in InGaN/GaN Light-Emitting Diodes by Graded-Composition Multiple Quantum Wells

IEEE Photonics Journal, 2013
InGaN/GaN light-emitting diodes (LEDs) with a graded-composition multiple quantum well (GQW) were designed not only to investigate the effect of polarization field on the efficiency droop in InGaN/GaN multiple quantum wells (MQWs) but to find out ...
Li-Hong Zhu, Wei Liu, Fan-Ming Zeng, Yu-Lin Gao, Bao-Lin Liu, Yi-Jun Lu, Zhong Chen   +6 more
doaj   +1 more source

When Poor Exciton Dissociation Limits Photocurrents in Organic Solar Cells: Why Low Offset Non‐Fullerene Acceptor Blends Can't Be Efficient

Advanced Materials, EarlyView.
The energetic offset between the donor and the acceptor components in organic photoactive layers is central to the tradeoff between photovoltage and photocurrent losses. This Perspective covers the most important issues surrounding this topic in non‐fullerene acceptor blends, from the difficulty of accurately determining state energies and driving ...
Dieter Neher, Manasi Pranav
wiley   +1 more source

A Perspective on Continuous Superlattices and Device‐by‐Design Pathways Toward Electrically Driven Perovskite Lasers and Cooperative Emission

Advanced Materials, EarlyView.
This Perspective links perovskite materials concepts to device‐by‐design perovskite laser diodes, emphasizing high‐current injection, thermal management, balanced charge transport, and optimized cavity feedback. It also illustrates how superlattice‐engineered halide perovskites can provide controlled excitonic gain and cooperative emission, distinct ...
Wei Yuan, Takashi Fujihara, Anastasia Soultati, Georgios Chatzigiannakis, Zoi Georgiopoulou, Towhid H. Chowdhury, Youichi Tsuchiya, Abd. Rashid Bin Mohd Yusoff, Peng Gao, Mohammad Khaja Nazeeruddin, Emmanuel Kymakis, Chihaya Adachi, Chuanjiang Qin, Maria Vasilopoulou   +13 more
wiley   +1 more source

Crystalline silicon PV module degradation after 20 years of field exposure studied by electrical tests, electroluminescence, and LBIC [PDF]

Progress in Photovoltaics: Research and Applications, 2015
AbstractStandardized tests to assure the reliability of photovoltaic modules and to detect possible early failures of modules when exposed in the field, due to design flaws or to the use of non‐appropriate materials, have played an important role in the successful growth of photovoltaic market in recent years. In order for this growth to be sustainable
Alberto Pozza, Tony Sample
openaire   +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

SolarFaultNet: CNN-based photovoltaic fault classification via channel-wise attention mechanisms

Franklin Open
The growing deployment of solar energy systems requires precise fault detection in photovoltaic (PV) modules. Conventional detection methods—including current–voltage curve analysis and electroluminescence imaging—while effective for specific ...
Mubarak Alanazi
doaj   +1 more source

Investigation on Potential-Induced Degradation in a 50 MWp Crystalline Silicon Photovoltaic Power Plant

International Journal of Photoenergy, 2018
The regular performance deterioration of P-type crystalline silicon solar modules and module strings caused by potential-induced degradation in a photovoltaic power plant was found in the field.
Jingsheng Huang, Hongtao Li, Yaojie Sun, He Wang, Hong Yang   +4 more
doaj   +1 more source

Electroluminescence Characterization of Recombination in Back Junction Silicon Heterojunction Test Structures: Role of the Inversion Layer

IEEE Journal of Photovoltaics, 2020
Electroluminescence (EL) characterization technique is used to quantify recombination properties in back junction silicon (Si) heterojunction (HJ) solar cell test structures with interdigitated back contact (IBC) emitters and metal contacts. These test structures are three terminal devices that allow the selective biasing and injection of minority ...
Nuha Ahmed, Lei Zhang, Ujjwal Das, Steven Hegedus   +3 more
openaire   +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