scholarly journals Photocarrier recombination dynamics in ternary chalcogenide CuInS2 quantum dots

2015 ◽  
Vol 17 (18) ◽  
pp. 11981-11989 ◽  
Author(s):  
Jianhui Sun ◽  
Michio Ikezawa ◽  
Xiuying Wang ◽  
Pengtao Jing ◽  
Haibo Li ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Transient Absorption ◽  
Time Resolved ◽  
Ternary Chalcogenide ◽  
Femtosecond Transient Absorption ◽  
Cuins2 Quantum Dots ◽  
Time Resolved Photoluminescence ◽  
Recombination Dynamics

Photocarrier recombination dynamics in ternary chalcogenide CuInS2 quantum dots (CIS QDs) was studied by means of femtosecond transient-absorption (TA) and nanosecond time-resolved photoluminescence (PL) spectroscopy.

scholarly journals Time-Resolved Spectroscopic Study of N,N–Di(4–bromo)nitrenium Ions in Acidic Aqueous Solution

2019 ◽  
Vol 20 (21) ◽  
pp. 5512 ◽  
Author(s):  
Lili Du ◽  
Zhiping Yan ◽  
Xueqin Bai ◽  
Runhui Liang ◽  
David Lee Phillips
Keyword(s):  
Aqueous Solution ◽  
Transient Absorption ◽  
Function Theory ◽  
Spectroscopic Properties ◽  
Time Resolved ◽  
Nitrenium Ions ◽  
Acidic Aqueous Solution ◽  
Nitrenium Ion ◽  
Femtosecond Transient Absorption ◽  
Aqueous Conditions

Nitrenium ions are common reactive intermediates with high activities towards some biological nucleophiles. In this paper, we employed femtosecond transient absorption (fs-TA) and nanosecond transient absorption (ns-TA) as well as nanosecond time-resolved resonance Raman (ns-TR3) spectroscopy and density function theory (DFT) calculations to study the spectroscopic properties of the N(4,4′–dibromodiphenylamino)–2,4,6–trimethylpyridinium BF4− salt (1) in an acidic aqueous solution. Efficient cleavage of the N–N bond (4 ps) to form the N,N–di(4–bromophenyl)nitrenium ion (DN) was also observed in the acidic aqueous solution. As a result, the dication intermediate 4 appears more likely to be produced after abstracting a proton for the nitrenium ion DN in the acid solution first, followed by an electron abstraction to form the radical cation intermediate 3. These new and more extensive time-resolved spectroscopic data will be useful to help to develop an improved understanding of the identity, nature, and properties of nitrenium ions involved in reactions under acidic aqueous conditions.

Time-Resolved Photoluminescence Study of Strain-Induced Quantum Dots Self-Formed in GaP/InP Short-Period Superlattice

1999 ◽  
Vol 38 (Part 2, No. 9A/B) ◽  
pp. L1006-L1008 ◽  
Author(s):  
Mayuko Fudeta ◽  
Hajime Asahi ◽  
Kumiko Asami ◽  
Yukio Narukawa ◽  
Yoichi Kawakami ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Time Resolved ◽  
Photoluminescence Study ◽  
Short Period ◽  
Time Resolved Photoluminescence

Steady state and time resolved photoluminescence properties of CuInS2/ZnS quantum dots in solutions and in solid films

2015 ◽  
Vol 167 ◽  
pp. 333-338 ◽  
Author(s):  
Nikolaos Droseros ◽  
Kostas Seintis ◽  
Mihalis Fakis ◽  
Spiros Gardelis ◽  
Androula G. Nassiopoulou
Keyword(s):  
Quantum Dots ◽  
Steady State ◽  
Photoluminescence Properties ◽  
Time Resolved ◽  
Solid Films ◽  
Time Resolved Photoluminescence

Localization and interdot carrier transfer in CdSe and CdZnMnSe quantum dots determined by cw and time-resolved photoluminescence

2007 ◽  
Vol 90 (20) ◽  
pp. 201916 ◽  
Author(s):  
J. H. Park ◽  
D. G. Choi ◽  
T. K. Lee ◽  
Eunsoon Oh ◽  
Sanghoon Lee ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Time Resolved ◽  
Carrier Transfer ◽  
Time Resolved Photoluminescence
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