Results 271 to 280 of about 1,875,449 (340)

53.5 % Photodiode RF Power Conversion Efficiency

Optical Fiber Communication Conference, 2010
A record 53.5% RF power conversion efficiency is reported for a photodiode delivering 24.4 dBm output power. This is achieved by optimized photodiode design, optical intensity-envelope shaping with a Mach-Zehnder modulator and photodiode signal compression.
Ulrik Gliese, Kristina Colladay, Alexander S. Hastings, David A. Tulchinsky, Vincent J. Urick, Keith J. Williams   +5 more
openaire   +1 more source

Homogenized chlorine distribution for >27% power conversion efficiency in perovskite solar cells.

Science
The spatial heterogeneity of halogen distribution in perovskite thin films represents a critical factor currently limiting both the power conversion efficiency and stability of solar cells.
Zhuang Xiong, Qian Zhang, Kai Cai, Haitao Zhou, Qi Song, Zhaoyang Han, Shuaiqing Kang, Yaowen Li, Qi Jiang, Xingwang Zhang, Jingbi You   +10 more
semanticscholar   +1 more source

Theoretical evidence of high power conversion efficiency in double perovskite solar cell device

, 2020
Power conversion efficiency (PCE) of inorganic lead-free double perovskite La2NiMnO6 photovoltaic material has reached 15.42% with considerably enhanced parameters of the absorbing layer.
Manish Kumar, Abhishek Raj, Arvind Kumar, A. Anshul   +3 more
semanticscholar   +1 more source

Self‐Assembled Interlayer Enables High‐Performance Organic Photovoltaics with Power Conversion Efficiency Exceeding 20%

Advances in Materials
Interfacial layers (ILs) are prerequisites to form the selective charge transport for high‐performance organic photovoltaics (OPVs) but mostly result in considerable parasitic absorption loss.
Shitao Guan, Yaokai Li, Chang Xu, Ni Yin, Chenran Xu, Congxu Wang, Mengting Wang, Yuxi Xu, Qi Chen, Dawei Wang, Lijian Zuo, Hongzheng Chen   +11 more
semanticscholar   +1 more source

Efficiency Regulations: Driving power conversion efficiency designs

IEEE Power Electronics Magazine, 2017
In recent decades, government agencies developed programs to improve the efficiency of our electronic products and appliances. A 1999 study estimated that up to 10% of electricity consumed by residential products was wasted when products had been turned off by consumers [1].
openaire   +1 more source

High-Efficiency Power Conversion Using Silicon Carbide Power Electronics

Materials Science Forum, 2014
The message of this paper is that the silicon carbide power transistors of today are good enough to design converters with efficiencies and switching speeds beyond comparison with corresponding technology in silicon. This is the time to act. Only in the highest power range the devices are missing.
Hans Peter Nee, J. Rabkowski, D. Peftitsis, G. Tolstoy, J. Colmenares, Diane Perle Sadik, M. Bakowski, Jang Kwon Lim, A. Antonopoulos, L. Ängquist, M. Zdanowski   +10 more
openaire   +1 more source

Fluorinated Low‐Dimensional Ruddlesden–Popper Perovskite Solar Cells with over 17% Power Conversion Efficiency and Improved Stability

Advances in Materials, 2019
Low‐dimensional Ruddlesden–Popper perovskites (RPPs) exhibit excellent stability in comparison with 3D perovskites; however, the relatively low power conversion efficiency (PCE) limits their future application.
Jishan Shi, Yerun Gao, Xiang Gao, Yun Zhang, Junjie Zhang, Xin Jing, M. Shao   +6 more
semanticscholar   +1 more source

CuGaSe 2 solar cells with 9.7% power conversion efficiency

Applied Physics A: Materials Science & Processing, 1996
Heterojunctions, such as ZnO/CdS/CuGaSe2, were fabricated for photovoltaic applications. Optimization of device structures based on monocrystalline CuGaSe2 led to the highest-to-date power conversion efficiencies for CuGaSe2 solar cells. At room temperature under 100 mW/cm2 AM1.5 illumination a maximum cell efficiency of 9.7% was achieved, given by an ...
M. Saad, H. Riazi, E. Bucher, M. Ch. Lux-Steiner   +3 more
openaire   +1 more source

Power Chips for Efficient Energy Conversion

AIP Conference Proceedings, 2004
The Power Chips technology employs a gap of 4–10 nanometers in a gap diode to allow for efficient thermal conversion with very low thermal leakage. The design ΔT is on the order of 400 degrees single stage, with operation possible from 1 K to 1600 K, depending on configuration and meeting engineering challenges.
openaire   +1 more source

Photovoltaic power conversion with efficiency weight optimisation

IEEE International Conference on Industrial Technology, 2003, 2004
Photovoltaic power conversion systems for power rating of about 2.5 kW consist generally of a step-up converter, a DC-AC inverter for 5 Hz and the transformer coupling to the grid. Potential separation is required between the modules and grid. A standard 5 Hz transformer can accomplish this separation.
E. Winfried, H. Weiss
openaire   +1 more source