Prof. Wei Li

1. Jiangsu Province Engineering Research Center for Fabrication and Application of Special Optical Fiber Materials and Devices, Nanjing 210093, China

Prof. Wei Li

1. Jiangsu Province Engineering Research Center for Fabrication and Application of Special Optical Fiber Materials and Devices, Nanjing 210093, China

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Academic Career Length

17Years (2010-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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20 October 2017 in Sensors

Journal Article

Fabrication of Ordered SnO₂ Nanostructures with Enhanced Humidity Sensing Performance

Ordered SnO₂ nanostructures were prepared as humidity sensors by nanosphere lithography with the magnetron sputtering technique. The X-ray diffraction patterns of SnO₂ nanostructures show that all intense diffraction peaks correspond to the crystallographic planes of SnO₂. The Atomic Force Microscope (AFM) mage shows that these SnO₂ nanostructures exhibited a classic honeycomb structure. The resistance of this sensor was measured to show that the resistance of the sensor decreases with an increase from lower relative humidity (RH) to higher RH. Additionally, the longest response/recovery time was 32 s/42 s for 11–96% RH. The hysteresis for the SnO₂ nanostructure sensor was <5%.

30 June 2021 in Plasmonics

Journal Article

High-Performance Tapered Fiber Surface Plasmon Resonance Sensor Based on the Graphene/Ag/TiO2 Layer

Dan Wang

Wei Li

Qinrong Zhang

Benquan Liang

Zhenkai Peng

Jinze Li

4 February 2022 in Results in Physics

Journal Article

Promoting sensitivity and selectivity of NO2 gas sensor based on (P,N)-doped single-layer WSe2: A first principles study

Kang Duan

Wei Li

Chen Zhu

Jinze Li

Jie Xu

Xiangfu Wang

23 September 2021 in Nanomaterials

Journal Article

Properties of S-Functionalized Nitrogen-Based MXene (Ti₂NS₂) as a Hosting Material for Lithium-Sulfur Batteries

Lithium-sulfur (Li-S) batteries have received extensive attention due to their high theoretical specific capacity and theoretical energy density. However, their commercialization is hindered by the shuttle effect caused by the dissolution of lithium polysulfide. To solve this problem, a method is proposed to improve the performance of Li-S batteries using Ti₂N(Ti₂NS₂) with S-functional groups as the sulfur cathode host material. The calculation results show that due to the mutual attraction between Li and S atoms, Ti₂NS₂ has the moderate adsorption energies for Li₂S_x species, which is more advantageous than Ti₂NO₂ and can effectively inhibit the shuttle effect. Therefore, Ti₂NS₂ is a potential cathode host material, which is helpful to improve the performance of Li-S batteries. This work provides a reference for the design of high-performance sulfur cathode materials.

29 May 2024 in Nanophotonics

Journal Article

High‐efficiency nonlinear frequency conversion enabled by optimizing the ferroelectric domain structure in x ‐cut LNOI ridge waveguide

Photonic devices based on ferroelectric domain engineering in thin film lithium niobate are key components for both classical and quantum information processing. Periodic poling of ridge waveguide can avoid the selective etching effect of lithium niobate, however, the fabrication of high‐quality ferroelectric domain is still a challenge. In this work, we optimized the applied electric field distribution, and rectangular inverted domain structure was obtained in the ridge waveguide which is beneficial for efficient nonlinear frequency conversions. Second harmonic confocal microscope, piezoresponse force microscopy, and chemical selective etching were used to characterize the inverted domain in the ridge waveguide. In addition, the performance of nonlinear frequency conversion of the periodically poled nano‐waveguide was investigated through second harmonic generation, and the normalized conversion efficiency was measured to be 1,720 % W ⁻¹ cm ⁻² , which is close to 60 % that of the theoretical value. The fabrication technique described in this work will pave the way for the development of high‐efficiency, low‐loss lithium niobate nonlinear photonic devices.

10 July 2019 in Materials Research Express

Journal Article

Characterization of Pt- or Pd-doped graphene based on density functional theory for H₂ gas sensor

Linlin Wang

Wei Li

Yun Cai

Peifeng Pan

Jinze Li

Jie Xu

About Me

Wei Li currently works as a doctoral supervisor at the Nanjing University of Posts and Telecommunications. He holds deputy director of the organization Department, and deputy director of the personnel Department of Nanjing University of Posts and Telecommunications. In June 2008, he received a doctor's degree in Microelectronics and Solid State Electronics from Nanjing University. From September 2011 to September 2012, he served as the deputy director of the Science and Technology Department in Changzhou. In 2013, he was selected as the young and middle-aged backbone teacher of Jiangsu Province to study overseas talents program. From March 2014 to March 2015, he went to the University of California and the University of San Diego for academic visits and research. From September 2016 to September 2017, he served as Deputy Secretary of the Party Working Committee of Guangling City. From May 2017 to July 2020, he served as the assistant dean of the School of Electronic and Optical Engineering and the School of Microelectronics of Nanjing University of Posts and Telecommunications. From July 2020 to January 2023, he served as the deputy dean of the School of Electronic and Optical Engineering and the School of Flexible Electronics (Future Technology) of Nanjing University of Posts and Telecommunications.

Prof. Wei Li

Prof. Wei Li

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