Polaron-formation revealed by transient XUV imaginary refractive index changes in different iron compounds

被引：10

作者：

Chen, Wenfan ^{[1
]}

Xiong, Wei ^{[1
,2
]}

机构：

[1] Univ Calif San Diego, Mat Sci & Engn Program, San Diego, CA 92103 USA

[2] Univ Calif San Diego, Dept Chem & Biochem, San Diego, CA 92103 USA

来源：

PHYSICAL CHEMISTRY CHEMICAL PHYSICS | 2021年 / 23卷 / 08期

基金：

美国国家科学基金会;

关键词：

Polarons - Refractive index - Absorption spectroscopy;

D O I：

10.1039/d1cp00103e

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：

We use transient extreme ultraviolet (XUV) reflection absorption spectroscopy to study polaron formation on hematite and akaganeite surfaces. We observed a reduction in the offset of the imaginary refractive index (kappa(offset)) that was attributed to the photoemission cross-section. The difference in the kappa(offset) reduction indicated that deeper-trapped polarons were formed in hematite than in akaganeite.

引用

页码：4486 / 4490

页数：5

共 27 条

[1] Electron transport in pure and substituted iron oxyhydroxides by small-polaron migration [J].

Alexandrov, Vitaly ;

Rosso, Kevin M. .

JOURNAL OF CHEMICAL PHYSICS, 2014, 140 (23)

[2] Controlling polaron formation at hematite surfaces by molecular functionalization probed by XUV reflection-absorption spectroscopy [J].

Biswas, Somnath ;

Wallentine, Spencer ;

Bandaranayake, Savini ;

Baker, L. Robert .

JOURNAL OF CHEMICAL PHYSICS, 2019, 151 (10)

[3]

Carneiro LM, 2017, NAT MATER, V16, P819, DOI [10.1038/NMAT4936, 10.1038/nmat4936]

[4] Ultrafast THz Probe of Photoinduced Polarons in Lead-Halide Perovskites [J].

Cinquanta, Eugenio ;

Meggiolaro, Daniele ;

Motti, Silvia G. ;

Gandini, Marina ;

Alcocer, Marcelo J. P. ;

Akkerman, Quinten A. ;

Vozzi, Caterina ;

Manna, Liberato ;

De Angelis, Filippo ;

Petrozza, Annamaria ;

Stagira, Salvatore .

PHYSICAL REVIEW LETTERS, 2019, 122 (16)

[5] Achieving Surface Sensitivity in Ultrafast XUV Spectroscopy: M2,3-Edge Reflection-Absorption of Transition Metal Oxides [J].

Cirri, Anthony ;

Husek, Jakub ;

Biswas, Somnath ;

Baker, L. Robert .

JOURNAL OF PHYSICAL CHEMISTRY C, 2017, 121 (29) :15861-15869

[6] Raman identification of corrosion products on automotive galvanized steel sheets [J].

Colomban, Ph. ;

Cherifi, S. ;

Despert, G. .

JOURNAL OF RAMAN SPECTROSCOPY, 2008, 39 (07) :881-886

[7] High flux coherent super-continuum soft X-ray source driven by a single-stage, 10mJ, Ti:sapphire amplifier-pumped OPA [J].

Ding, Chengyuan ;

Xiong, Wei ;

Fan, Tingting ;

Hickstein, Daniel D. ;

Popmintchev, Tenio ;

Zhang, Xiaoshi ;

Walls, Mike ;

Murnane, Margaret M. ;

Kapteyn, Henry C. .

OPTICS EXPRESS, 2014, 22 (05) :6194-6202

[8] Competition Between Hot-Electron Cooling and Large Polaron Screening in CsPbBr3 Perovskite Single Crystals [J].

Evans, Tyler J. S. ;

Miyata, Kiyoshi ;

Joshi, Prakriti P. ;

Maehrlein, Sebastian ;

Liu, Fang ;

Zhu, X. -Y. .

JOURNAL OF PHYSICAL CHEMISTRY C, 2018, 122 (25) :13724-13730

[9] Femtosecond studies of electron dynamics at interfaces [J].

Ge, NH ;

Wong, CM ;

Harris, CB .

ACCOUNTS OF CHEMICAL RESEARCH, 2000, 33 (02) :111-118

[10] Surface electron dynamics in hematite (α-Fe2O3): correlation between ultrafast surface electron trapping and small polaron formation [J].

Husek, Jakub ;

Cirri, Anthony ;

Biswas, Somnath ;

Baker, L. Robert .

CHEMICAL SCIENCE, 2017, 8 (12) :8170-8178

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