Results 111 to 120 of about 189,479 (217)

Free Charge Generation in Organic Photoconversion Devices–the Impact of Electrostatic Potentials

Advanced Energy Materials, EarlyView.
Free charge generation in organic photovoltaic and photodetector devices typically requires an external driving force to separate bound excitons formed upon photoexcitation. This review details how electrostatic potentials, arising from molecular charge distributions in organic semiconductors, can impact interfacial energetic landscapes and promote ...
Emily J. Yang, Song Yi Park, Vick Y. Qiu, Ji‐Seon Kim   +3 more
wiley   +1 more source

Electronic polarizability, single oscillator analysis and optoelectronic properties of Cu2CdSnS4 nanomaterial photoabsorber layer fabricated by spray pyrolysis

Next Materials
The Cu₂CdSnS₄ (CCTS) nanomaterial photoabsorber layers were successfully deposited by spray pyrolysis at substrate temperatures between 300 and 400 °C to investigate the effect of deposition temperature on structural, optical, electronic polarizability ...
Michael Bikom Ochang, Julius Tsaviv, Rex Jubu, Emmanuel Tikyaa, Adebayo Adepoju, Mbalaha Zendesha, Francis Aungwa, Yushamdan Yusof   +7 more
doaj   +1 more source

Descriptor‐Guided Computational Screening of Non‐Fullerene Acceptor Cores for Organic Solar Cells

Advanced Energy Materials, EarlyView.
We screen over 4000 non‐fullerene acceptors using their ionization energy, electron affinity, quadrupole, and dipole moments to select the top‐ten candidates for a given donor polymer. The workflow recovers known high‐performance motifs and reveals how molecular components influence material properties.
Kun‐Han Lin, J. Terence Blaskovits, Wenlan Liu, Shu‐Yi Hu, Kuei‐Jhong Lin, Sandeep Sharma, Julien Gorenflot, Martin Heeney, Frédéric Laquai, Denis Andrienko   +9 more
wiley   +1 more source

Frequency-Doubled Phase-Coded Microwave Pulses Generation Based on an Optoelectronic Oscillator

Photonics
This paper proposes an optoelectronic oscillator (OEO)-based scheme for generating frequency-doubled binary phase-coded microwave pulses. The architecture employs a cascaded dual-polarization quadrature phase shift keying modulator (DP-QPSK) and a ...
Xiao Chen, Huiyun Tang, Nan Zhang, Jingfeng Du, Yumo Lei, Ming Li, Wei Li   +6 more
doaj   +1 more source

Resonant tunnelling optoelectronic circuits [PDF]

, 2012
We introduce and report recent developments on a novel five port optoelectronic voltage controlled oscillato r consisting of a resonant tunneling diode (RTD) optical-waveguide integrated with a laser diode.
Romeira, Bruno, Figueiredo, J. M. L.
core  

Broadband chaos generated by an optoelectronic oscillator.

, 2010
We study an optoelectronic time-delay oscillator that displays high-speed chaotic behavior with a flat, broad power spectrum. The chaotic state coexists with a linearly stable fixed point, which, when subjected to a finite-amplitude perturbation, loses ...
Gauthier, Daniel J, Illing, Lucas, Gao, Zheng, Schöll, Eckehard, Callan, Kristine E   +4 more
core   +1 more source

All photonic-gain Optoelectronic Oscillator at 10 GHz

, 2018
International audienceWe present a 10 GHz optoelectronic oscillator (OEO) based on optical amplification. The setup uses a 1-km of standard optical fiber at 1.5 μm and a semiconductor optical amplifier (SOA).
Garreau, A., Brenot, R., P. Berger, Crozatier, Vincent, F. Duport, Pascale, Nouchi, Bretenaker, Fabien, Morvan, Loïc, K. Mezkhani, Berger, Perrine, D. Dolfi, Lelièvre, Oriane, Goldfarb, Fabienne, F. Van Dijk, Baili, Ghaya, van Dijk, Frederic, O. Llopis, Mezkhani, K., Dolfi, Daniel, Llopis, Olivier, F. Bretenaker, F. Goldfarb, P. Charbonnier, Duport, François, G. Baili, V. Crozatier, L. Morvan, Paret, J-F, J-F. Paret, R. Brenot, Charbonnier, P., O. Lelievre, P. Nouchi, A. Garreau   +33 more
core   +1 more source

Widely tunable dual-loop optoelectronic oscillator

, 2014
We demonstrate a record widely tunable dual-loop optoelectronic oscillator with tunable band from 3.39 to 57.50 GHz. The single-side band phase noise is below -120 dBc/Hz at 10 kHz offset for all the measurement frequency points. ?
Hu, Weiwei, Huanfa Peng, Lixin Zhu, Zhang, Cheng, Xiaopeng Xie, Sun, Tao, Peng Guo, Xie, Xiaopeng, Zhu, Lixin, Tao Sun, Zhangyuan Chen, Guo, Peng, Cheng Zhang, Chen, Zhangyuan, Peng, Huanfa, Weiwei Hu   +15 more
core   +1 more source

Ultra-high-Q optoelectronic oscillator based on bilaterally coupled loops [PDF]

, 2016
An optoelectronic oscillator (OEO) based on bilateral coupling between two individual optoelectronic loops is demonstrated. The resulting OEO has two modes of operation, in which the individual loops either oscillate or act as IIR filters.
Charalambous, G, Hasanuzzaman, GKM, Perentos, A, Iezekiel, S   +3 more
core  

Optoelectronic Oscillator Based on Fiber Ring Resonator: Overall System Optimization and Phase Noise Reduction

, 2012
6 pagesInternational audienceTheoretical and experimental optimization studies are presented in this paper, where the aim is to improve the phase noise of an optoelectronic oscillator based on a passive fiber ring resonator.
Saleh, Khaldoun, Cibiel, Gilles, Llopis, Olivier, Merrer, Pierre-Henri   +3 more
core   +3 more sources