ORCID Profile
0000-0001-7236-0505
Current Organisation
Shandong University
Does something not look right? The information on this page has been harvested from data sources that may not be up to date. We continue to work with information providers to improve coverage and quality. To report an issue, use the Feedback Form.
Publisher: Royal Society of Chemistry (RSC)
Date: 2018
DOI: 10.1039/C8NR07788F
Abstract: Ultra-small β-PbO QDs have been successfully fabricated and showed ultrafast carrier dynamics, excellent photoresponse behavior and stability under ambient conditions.
Publisher: Wiley
Date: 04-01-2019
Publisher: Walter de Gruyter GmbH
Date: 14-01-2020
Abstract: Two-dimensional tin sulfide (SnS), as a black phosphorus-analogue binary semiconductor, has received considerable attention in photonics and optoelectronics. Herein, the third-order nonlinearity susceptibility Im χ 3 is enhanced from −(6.88 ± 0.10) × 10 −14 esu to −(15.90 ± 0.27) × 10 −14 esu by the size-related quantum confinement in layered SnS nanosheets. Due to the energy level alignment, a phonon-bottleneck effect is observed, which leads to a prolonged carrier lifetime. These results provide a platform for actively tuning the linear and nonlinear optics, and pave the way for designing SnS-based tunable and anisotropic optoelectronic devices.
Publisher: Wiley
Date: 05-03-2020
Publisher: Wiley
Date: 24-04-2019
Publisher: Wiley
Date: 22-05-2019
Publisher: Wiley
Date: 07-02-2019
Abstract: Graphdiyne is a new carbon allotrope comprising sp- and sp
Publisher: Royal Society of Chemistry (RSC)
Date: 2019
DOI: 10.1039/C9NR03167G
Abstract: Lead monoxide (PbO), a novel few-layer two-dimensional (2D) material, was theoretically predicted to have an excellent optical response.
Publisher: Royal Society of Chemistry (RSC)
Date: 2018
DOI: 10.1039/C8TC01606B
Abstract: Ternary copper antimony sulfide nanocrystals (CAS NCs), a promising solar cell candidate, have been proposed and investigated from the perspective of nonlinear optical response and ultrafast photoinduced carrier dynamics.
Publisher: Wiley
Date: 31-10-2018
Publisher: Springer Science and Business Media LLC
Date: 11-11-2021
DOI: 10.1038/S41524-021-00655-W
Abstract: Chalcogenide phase change materials (PCMs) have been extensively applied in data storage, and they are now being proposed for high resolution displays, holographic displays, reprogrammable photonics, and all-optical neural networks. These wide-ranging applications all exploit the radical property contrast between the PCMs’ different structural phases, extremely fast switching speed, long-term stability, and low energy consumption. Designing PCM photonic devices requires an accurate model to predict the response of the device during phase transitions. Here, we describe an approach that accurately predicts the microstructure and optical response of phase change materials during laser induced heating. The framework couples the Gillespie Cellular Automata approach for modelling phase transitions with effective medium theory and Fresnel equations. The accuracy of the approach is verified by comparing the PCM’s optical response and microstructure evolution with the results of nanosecond laser switching experiments. We anticipate that this approach to simulating the switching response of PCMs will become an important component for designing and simulating programmable photonics devices. The method is particularly important for predicting the multi-level optical response of PCMs, which is important for all-optical neural networks and PCM-programmable perceptrons.
Publisher: American Chemical Society (ACS)
Date: 13-12-2019
Abstract: Few-layered InSe nanosheets were fabricated by the simple liquid-phase exfoliation method. The morphology and crystal structure features of InSe nanosheet s le were characterized comprehensively. The photoluminescence (PL) spectrum indicated that the liquid-phase exfoliated InSe nanosheets contained variously layered nanoflakes, where eight layers nanosheets dominate. In addition, the first-principle simulation was carried out to describe the electron density of states (DOS) and the electronic band structures. Moreover, the few-layered InSe nanosheets performed excellent nonlinear absorption properties in a broad spectral band. As an application, the stable passively Q-switched (PQS) lasers with few-layered InSe nanosheets saturable absorbers (SAs) were realized with the operating wavelengths at 1.06, 1.34, and 1.91 μm. The shortest pulse durations were 599, 520, and 210 ns, respectively. Our results confirmed that the few-layered InSe nanosheets could be an excellent candidate for pulsed lasers in wide spectral bands.
Publisher: Wiley
Date: 19-12-2017
Publisher: IOP Publishing
Date: 16-05-2019
No related grants have been discovered for Yunzheng Wang.