Visualizing the impact of chloride addition on the microscopic carrier dynamics of MAPbI3 thin films using femtosecond transient absorption microscopy

2019 ◽  
Vol 151 (23) ◽  
pp. 234710 ◽  
Author(s):  
Jin Yu ◽  
Zhongguo Li ◽  
Charles Kolodziej ◽  
Seher Kuyuldar ◽  
Warren S. Warren ◽  
...  
Keyword(s):  
Thin Films ◽  
Transient Absorption ◽  
Carrier Dynamics ◽  
Femtosecond Transient Absorption ◽  
The Impact

scholarly journals Ultrafast Nonlinear Optical Response and Carrier Dynamics in Layered Gallium Sulfide (GaS) Single-Crystalline Thin Films

2021 ◽  
Vol 8 ◽  
Author(s):  
Haishuang Lu ◽  
Yu Chen ◽  
Kexin Yang ◽  
Yawei Kuang ◽  
Zhongguo Li ◽  
...  
Keyword(s):  
Thin Films ◽  
Nonlinear Absorption ◽  
Nonlinear Optical ◽  
Transient Absorption ◽  
Optical Response ◽  
Carrier Dynamics ◽  
Nonlinear Optical Response ◽  
Saturable Absorption ◽  
Gallium Sulfide ◽  
Femtosecond Transient Absorption

Gallium sulfide (GaS) is a layered metal monochalcogenide semiconductor that has recently garnered considerable attention in various fields. In this study, we investigated the nonlinear absorption characteristics of multilayer β-GaS thin films on sapphire substrate by using femtosecond open-aperture Z-scan method. The β-GaS films exhibit saturable absorption behavior at 532 nm while nonlinear absorption appears under 650 nm excitation. The nonlinear absorption coefficient of β-GaS was determined to be −1.8 × 10–8 m/W and 4.9 × 10–8 m/W at 532 and 650 nm, respectively. The carrier dynamics of β-GaS films was studied via femtosecond transient absorption (TA) measurements. The TA results demonstrated that β-GaS films have broad photo-induced absorption in the visible regime and sub-nanosecond lifetime. Our results indicate that gallium sulfide has large nonlinear optical response and long carrier lifetime, which could be applied in future photonic devices.

scholarly journals Carrier dynamics in α‐Fe2O3 (0001) thin films and single crystals probed by femtosecond transient absorption and reflectivity

2006 ◽  
Vol 99 (5) ◽  
pp. 053521 ◽  
Author(s):  
Alan G. Joly ◽  
Joshua R. Williams ◽  
Scott A. Chambers ◽  
Gang Xiong ◽  
Wayne P. Hess ◽  
...  
Keyword(s):  
Thin Films ◽  
Single Crystals ◽  
Transient Absorption ◽  
Carrier Dynamics ◽  
Femtosecond Transient Absorption

Femtosecond Transient Absorption Spectroscopy in α-sexithienyl thin films

1999 ◽  
Vol 101 (1-3) ◽  
pp. 555-556 ◽  
Author(s):  
G. Wegmann ◽  
R.F. Mahrt ◽  
H. Bässler ◽  
H. Giessen ◽  
M. Murgia ◽  
...  
Keyword(s):  
Thin Films ◽  
Absorption Spectroscopy ◽  
Transient Absorption ◽  
Transient Absorption Spectroscopy ◽  
Femtosecond Transient Absorption ◽  
Femtosecond Transient Absorption Spectroscopy

scholarly journals Femtosecond Transient Absorption Microscopy of Singlet Exciton Motion in Side-Chain Engineered Perylene-Diimide Thin Films

2020 ◽  
Vol 124 (13) ◽  
pp. 2721-2730 ◽  
Author(s):  
Raj Pandya ◽  
Richard Y. S. Chen ◽  
Qifei Gu ◽  
Jeffrey Gorman ◽  
Florian Auras ◽  
...  
Keyword(s):  
Thin Films ◽  
Transient Absorption ◽  
Perylene Diimide ◽  
Side Chain ◽  
Singlet Exciton ◽  
Femtosecond Transient Absorption

scholarly journals Bromine substitution improves excited-state dynamics in mesoporous mixed halide perovskite films

Nanoscale ◽  
2017 ◽  
Vol 9 (33) ◽  
pp. 12005-12013 ◽  
Author(s):  
Eric M. Talbert ◽  
Holly F. Zarick ◽  
Abdelaziz Boulesbaa ◽  
Naiya Soetan ◽  
Alexander A. Puretzky ◽  
...  
Keyword(s):  
Excited State ◽  
Absorption Spectroscopy ◽  
Transient Absorption ◽  
Carrier Dynamics ◽  
Transient Absorption Spectroscopy ◽  
Excited State Dynamics ◽  
Halide Perovskites ◽  
Halide Perovskite ◽  
Carrier Thermalization ◽  
The Impact

This study investigates the impact of Br substitution on the carrier dynamics in mixed halide perovskites using ultrafast transient absorption spectroscopy, revealing faster carrier thermalization lifetimes with increasing Br content.

scholarly journals Simplification of femtosecond transient absorption microscopy data from CH3NH3PbI3perovskite thin films into decay associated amplitude maps

2016 ◽  
Vol 27 (11) ◽  
pp. 114002 ◽  
Author(s):  
Benjamin Doughty ◽  
Mary Jane Simpson ◽  
Bin Yang ◽  
Kai Xiao ◽  
Ying-Zhong Ma
Keyword(s):  
Thin Films ◽  
Transient Absorption ◽  
Femtosecond Transient Absorption ◽  
Microscopy Data
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