Photo-excited charge carrier imaging by time-resolved pattern illumination phase microscopy

被引:16
|
作者
Katayama, Kenji [1 ,2 ]
机构
[1] Chuo Univ, Dept Appl Chem, Tokyo 1128551, Japan
[2] Japan Sci & Technol Agcy JST, PRESTO, Kawaguchi, Saitama 3320012, Japan
来源
JOURNAL OF CHEMICAL PHYSICS | 2020年 / 153卷 / 05期
关键词
ABSORPTION-SPECTROSCOPY; PHOTOCATALYTIC ACTIVITY; ELECTRON-TRANSPORT; DATA ASSIMILATION; TIO2; DYNAMICS; RANGE; ENHANCEMENT; PEROVSKITES; SEPARATION;
D O I
10.1063/5.0009312
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
A nanosecond time-resolved imaging technique has been developed for the observation of the photo-excited charge carrier dynamics in photo-devices such as photocatalysts and solar cells. An arbitrary spatial pattern of pump pulse light excites the charge carriers, which are observed by phase-contrast imaging. This patterned excitation is preferable for various statistical image reconstruction techniques based on robust principal component analysis and the least absolute shrinkage and selection operator, which helped the enhancement of the signal-to-noise ratio and the removal of unwanted image components. By using data assimilation with the charge decay model, the lifetime and diffusion coefficients were mapped for the photo-excited electrons in a nano-particulate titanium oxide film and other photo-device materials.
引用
收藏
页数:9
相关论文
共 50 条
  • [1] Probing carrier dynamics in photo-excited graphene with time-resolved ARPES
    Gierz, I.
    JOURNAL OF ELECTRON SPECTROSCOPY AND RELATED PHENOMENA, 2017, 219 : 53 - 56
  • [2] Local Charge Carrier Dynamics for Photocatalytic Materials Using Pattern-Illumination Time-Resolved Phase Microscopy
    Katayama, Kenji
    Kawaguchi, Kei
    Egawa, Yuta
    Pan, Zhenhua
    ENERGIES, 2022, 15 (24)
  • [3] TIME-RESOLVED RAMAN-SPECTRA OF PHOTO-EXCITED SEMICONDUCTOR PLASMA
    LUZZI, R
    VASCONCELLOS, AR
    JOURNAL OF RAMAN SPECTROSCOPY, 1981, 10 (JAN) : 28 - 32
  • [4] TIME-RESOLVED OPTICAL STUDIES OF PHOTO-EXCITED STATES IN C-60
    THOMAS, TN
    RYAN, JF
    TAYLOR, RA
    MIHAILOVIC, D
    ZAMBONI, R
    INTERNATIONAL JOURNAL OF MODERN PHYSICS B, 1992, 6 (23-24): : 3931 - 3934
  • [5] Electron propagation from a photo-excited surface: implications for time-resolved photoemission
    Yang, S. -L.
    Sobota, J. A.
    Kirchmann, P. S.
    Shen, Z. -X.
    APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING, 2014, 116 (01): : 85 - 90
  • [6] Electron propagation from a photo-excited surface: implications for time-resolved photoemission
    S.-L. Yang
    J. A. Sobota
    P. S. Kirchmann
    Z.-X. Shen
    Applied Physics A, 2014, 116 : 85 - 90
  • [7] Defocus-induced phase contrast enhancement in pattern illumination time-resolved phase microscopy
    Katayama, Kenji
    Chugenji, Tatsuya
    Kawaguchi, Kei
    AIP ADVANCES, 2021, 11 (11)
  • [8] Effect of CoOx and Rh Cocatalysts on Local Charge Carrier Dynamics of BiVO4 Particles by Pattern-Illumination Time-Resolved Phase Microscopy
    Katayama, Kenji
    Chugenji, Tatsuya
    Pan, Zhenhua
    JOURNAL OF PHYSICAL CHEMISTRY C, 2022, 126 (45): : 19319 - 19326
  • [9] Mesoscopic structural phase progression in photo-excited VO2 revealed by time-resolved x-ray diffraction microscopy
    Yi Zhu
    Zhonghou Cai
    Pice Chen
    Qingteng Zhang
    Matthew J. Highland
    Il Woong Jung
    Donald A. Walko
    Eric M. Dufresne
    Jaewoo Jeong
    Mahesh G. Samant
    Stuart S. P. Parkin
    John W. Freeland
    Paul G. Evans
    Haidan Wen
    Scientific Reports, 6
  • [10] Mesoscopic structural phase progression in photo-excited VO2 revealed by time-resolved x-ray diffraction microscopy
    Zhu, Yi
    Cai, Zhonghou
    Chen, Pice
    Zhang, Qingteng
    Highland, Matthew J.
    Jung, Il Woong
    Walko, Donald A.
    Dufresne, Eric M.
    Jeong, Jaewoo
    Samant, Mahesh G.
    Parkin, Stuart S. P.
    Freeland, John W.
    Evans, Paul G.
    Wen, Haidan
    SCIENTIFIC REPORTS, 2016, 6