Results 281 to 290 of about 1,875,449 (340)

Compositional Engineering for Thermally Stable, Highly Efficient Perovskite Solar Cells Exceeding 20% Power Conversion Efficiency with 85 °C/85% 1000 h Stability

Advances in Materials, 2019
Perovskite solar cells have received great attention because of their rapid progress in efficiency, with a present certified highest efficiency of 23.3%. Achieving both high efficiency and high thermal stability is one of the biggest challenges currently
Taisuke Matsui, Teruaki Yamamoto, T. Nishihara, R. Morisawa, T. Yokoyama, T. Sekiguchi, T. Negami   +6 more
semanticscholar   +1 more source

Optimization of klystron power conversion efficiency

1966 International Electron Devices Meeting, 1966
Optimum power conversion efficiency in klystrons involves two factors: (1) electron bunching, for highest current conversion efficiency, and (2) minimum velocity spread, for optimum energy removal in the output gap. The merit figure, a new criterion involving both of these factors, is shown to give an excellent quantitative indication of klystron power
openaire   +1 more source

Efficient All-Polymer Solar Cells based on a New Polymer Acceptor Achieving 10.3% Power Conversion Efficiency

ACS Energy Letters, 2019
Here we demonstrate efficient all-polymer solar cells (all-PSCs) based on a polymer acceptor named PFBDT-IDTIC. By combining PFBDT-IDTIC with a fluorinated donor polymer (PM6), a high power conversion efficiency of 10.3% can be achieved, which is the ...
Huatong Yao, Fujin Bai, Huawei Hu, Lingeswaran Arunagiri, Jianquan Zhang, Yuzhong Chen, Han Yu, Shangshang Chen, Tao Liu, J. Lai, Y. Zou, H. Ade, H. Yan   +12 more
semanticscholar   +1 more source

Toward Over 15% Power Conversion Efficiency for Organic Solar Cells: Current Status and Perspectives

Small Methods, 2017
Jinaqi Zhang, Ling-Yun Zhu, Zhi-Xiang Wei   +2 more
exaly   +2 more sources

Efficiency improvement of power conversion system with multilayer power inductor

2020 IEEE International Conference on Consumer Electronics - Asia (ICCE-Asia), 2020
In this paper, the multilayer power inductor with the air-clip is designed and fabricated to improve the saturation current of power inductor for the power conversion system. It is proved that the air-clip is able to influence the saturation current of power inductor and the efficiency of the power conversion system.
Hyun Gyu Jang, Dong Yun Jung, Doohyung Cho, Kun Sik Park, Jong-Won Lim, Yong Ha Lee   +5 more
openaire   +1 more source

Compact and efficient transformerless power conversion system

Proceedings of International Conference on Power Electronics, Drives and Energy Systems for Industrial Growth, 2002
The power conversion system (PCS) developed by the author is a new technology that efficiently transforms power between AC and DC. The conversion process permits the input voltage level to be stepped up or down without the use of magnetic core transformers.
R. Limpaecher, R. Rodriguez, M. Bush, K. Vinacco, M. Gatewood   +4 more
openaire   +2 more sources

High-efficiency fuel cell power conversion system

30th Annual Conference of IEEE Industrial Electronics Society, 2004. IECON 2004, 2005
This study presents a newly designed topology for a fuel cell energy source conversion in order to supply a highly reliable utility power. Because the fuel cell has the power quality of low voltage as well as high current due to the electrochemical reaction, a high step-up DC-DC converter is utilized for boosting the fuel cell voltage up to a constant ...
null Rong-Jong Wai, null Rou-Yong Duan, null Meng-An Kuo   +2 more
openaire   +1 more source

A new breakthrough for graphene/carbon nanotubes as counter electrodes of dye-sensitized solar cells with up to a 10.69% power conversion efficiency

Journal of Power Sources, 2019
A three-dimensional graphene/single-walled carbon nanotube counter electrode is developed for dye-sensitized solar cells via a drop-coating method. The resulting graphene/single-walled carbon nanotube counter electrode show satisfactory transmittance (56.
Fei Yu, Yan Shi, Wenhao Yao, Sheng Han, Jie Ma   +4 more
semanticscholar   +1 more source

Power Conversion Efficiency Enhancement of Low-Bandgap Mixed Pb–Sn Perovskite Solar Cells by Improved Interfacial Charge Transfer

ACS Energy Letters, 2019
The power conversion efficiency (PCE) of low-bandgap mixed Pb–Sn perovskite solar cells (PSCs) has been significantly hindered by large open-circuit voltage (Voc) loss and poor fill factor (FF).
Tingming Jiang, Zeng Chen, Xu Chen, Xin-ya Chen, Xuehui Xu, Tianyu Liu, Lizhong Bai, Dexin Yang, D. Di, W. E. Sha, Haiming Zhu, Y. Yang   +11 more
semanticscholar   +1 more source

Power Module Technologies for Efficient Energy Conversion

ECS Meeting Abstracts, 2011
Abstract not Available.
Hiroshi Ohnishi, Gourab Majumdar
openaire   +1 more source