Results 61 to 70 of about 319,656 (388)

Optical Gain from Biexcitons in CsPbBr3 Nanocrystals Revealed by Two-dimensional Electronic Spectroscopy.

Journal of Physical Chemistry Letters, 2019
Perovskite semiconductor nanocrystals (NCs) exhibit highly efficient optical gain, which is promising for laser applications. However, the intrinsic mechanism of optical gain in perovskite NCs, particularly whether more than one exciton per NCs is ...
Wei Zhao, Zhengyuan Qin, Chunfeng Zhang, Guodong Wang, Xinyu Huang, Bin Li, X. Dai, M. Xiao   +7 more
semanticscholar   +1 more source

Removing Homocoupling Defects in Alkoxy/Alkyl‐PBTTT Enhances Polymer:Fullerene Co‐Crystal Formation and Stability

Advanced Functional Materials, EarlyView.
PBTTT‐OR‐R, a C14‐alkoxy/alkyl‐PBTTT polymer derivative, is of substantial interest for optoelectronics due to its specific fullerene intercalation behavior and enhanced charge‐transfer absorption. Comparing this polymer with (S) and without (O) homocoupling defects reveals that PBTTT‐OR‐R(O) forms stable co‐crystals with PC61BM, while PBTTT‐OR‐R(S ...
Zhen Liu, Jochen Vanderspikken, Paola Mantegazza, Stefania Moro, Mouna Hamid, Sigurd Mertens, Niko Van den Brande, Laurence Lutsen, Vincent Lemaur, David Beljonne, Giovanni Costantini, Koen Vandewal, Bruno Van Mele, Wouter Maes, Bart Goderis   +14 more
wiley   +1 more source

Highly nondegenerate four-wave mixing and gain nonlinearity in a strained multiple-quantum-well optical amplifier [PDF]

, 1993
Highly nondegenerate four-wave mixing was investigated in a 1.5 µm compressively strained multi-quantum-well semiconductor traveling-wave optical amplifier at detuning frequencies up to 600 GHz.
Dawson, Jay W., Koren, Uziel, Miller, Barry I., Newkirk, Michael A., Park, Namkyoo, Vahala, Kerry J., Zhou, Jianhui   +6 more
core   +1 more source

Unique Performance Considerations for Printable Organic Semiconductor and Perovskite Radiation Detectors: Toward Consensus on Best Practice Evaluation

Advanced Functional Materials, EarlyView.
A lack of standard approaches for testing and reporting the performance of metal halide perovskites and organic semiconductor radiation detectors has resulted in inconsistent interpretation of performance parameters, impeding progress in the field. This Perspective recommends key metrics and experimental details, which are suggested for reporting in ...
Jessie A. Posar, Matthew Large, Andrea Ciavatti, Laura Basiricò, Beatrice Fraboni, Paul J. Sellin, Attila J. Mozer, Marco Petasecca, Matthew J. Griffith   +8 more
wiley   +1 more source

Design and performance evaluations with optical comparator link

Engineering Science and Technology, an International Journal, 2017
This article presents performance investigation of the proposed high speed optical comparator network. Execution for inputs data A and data B, the equivalence (A = B), less than (A  B) operations have been realized through separate branches accompanying ...
Devendra Kr. Tripathi
doaj   +1 more source

Packet equalisation in PONs using adjustable gain-clamped semiconductor optical amplifiers (AGC-SOA) [PDF]

, 2011
The past ten years have witnessed a dramatic growth in the delivery of high bandwidth services through Passive Optical Networks (PONs), directly to the home or to the kerb.
Andonovic, Ivan, Kelly, A E, Liu, Lin, Michie, Walter   +3 more
core   +1 more source

Static gain saturation in quantum dot semiconductor optical amplifiers

Optics Express, 2008
Measurements of saturated amplified spontaneous emission-spectra of quantum dot semiconductor optical amplifiers demonstrate efficient replenishment of the quantum-dot ground state population from excited states. This saturation behavior is perfectly modeled by a rate equation model.
Christian, Meuer, Jungho, Kim, Matthias, Laemmlin, Sven, Liebich, Amir, Capua, Gadi, Eisenstein, Alexey R, Kovsh, Sergey S, Mikhrin, Igor L, Krestnikov, Dieter, Bimberg   +9 more
openaire   +2 more sources

Organic Electrochemical Transistor Channel Materials: Copolymerization Versus Physical Mixing of Glycolated and Alkoxylated Polymers

Advanced Functional Materials, EarlyView.
This work discusses the use of blended channel materials in OECTs. It explores how mixing glycolated and alkoxylated polymers in various ratios offers a simpler and more efficient route to tuning OECT properties. The performance of the polymer blends is compared to the corresponding copolymers, demonstrating similar OECT characteristics, swelling ...
Lize Bynens, Kaishuai Zhang, Priscila Cavassin, Arwin Goossens, Jochen Vanderspikken, Tania C. H. Castillo, Demetra Tsokkou, Adam Marks, Arianna Magni, Karrie Weaver, Laurence Lutsen, Sahika Inal, Koen Vandewal, Natalie Banerji, Wouter Maes   +14 more
wiley   +1 more source

SOA Assisted Wavelength Reusing for 25G Colorless PON With Low-Cost 10G EAM

IEEE Photonics Journal, 2022
This paper demonstrates a C-band 25G colorless passive optical network (PON) based on semiconductor optical amplifier (SOA) and 10G electro-absorption modulator (EAM). The experimental results show that the SOA in the optical network unit (ONU) can erase
Wanting Xu, Luyao Huang, Yongxin Xu, Wenqing Jiang, Weisheng Hu, Guoqin Ke, Lilin Yi   +6 more
doaj   +1 more source

Quantum Emitters in Hexagonal Boron Nitride: Principles, Engineering and Applications

Advanced Functional Materials, EarlyView.
Quantum emitters in hexagonal boron nitride have emerged as a promising candidate for quantum information science. This review examines the fundamentals of these quantum emitters, including their level structures, defect engineering, and their possible chemical structures.
Thi Ngoc Anh Mai, Md Shakhawath Hossain, Nhat Minh Nguyen, Yongliang Chen, Chaohao Chen, Xiaoxue Xu, Quang Thang Trinh, Toan Dinh, Toan Trong Tran   +8 more
wiley   +1 more source