Competing role of quantum localization and interfacial disorder in determining triplet exciton fission and recombination dynamics in polymer/fullerene photovoltaics

2014 ◽  
Author(s):  
Eric R. Bittner
Keyword(s):  
Triplet Exciton ◽  
Quantum Localization ◽  
Recombination Dynamics

Demonstrating the role of anchoring functionality in interfacial electron transfer dynamics in the newly synthesized BODIPY–TiO2 nanostructure composite

2017 ◽  
Vol 41 (12) ◽  
pp. 5215-5224 ◽  
Author(s):  
Sunil Aute ◽  
Partha Maity ◽  
Amitava Das ◽  
Hirendra N. Ghosh
Keyword(s):  
Electron Transfer ◽  
Charge Recombination ◽  
Interfacial Electron Transfer ◽  
Tio2 Nanostructure ◽  
Recombination Dynamics

Scheme illustrating the extent of coupling and charge recombination dynamics between BODIPY and NS-TiO2 anchoring through the catechol and resorcinol binding group.

Role of Explicitly Included Solvents on Ultrafast Electron Injection and Recombination Dynamics at TiO2/Dye Interfaces

2020 ◽  
Vol 12 (43) ◽  
pp. 49174-49181
Author(s):  
Wei Ma ◽  
Yang Jiao ◽  
Haibo Li ◽  
Haizhong Guo ◽  
Efthimios Kaxiras ◽  
...  
Keyword(s):  
Electron Injection ◽  
Recombination Dynamics

Nonlinear photocarrier dynamics and the role of shallow traps in mixed-halide mixed-cation hybrid perovskites

2021 ◽  
Author(s):  
David Alberto Valverde-Chávez ◽  
Esteban Rojas-Gatjens ◽  
Jacob Williamson ◽  
Sarthak Jariwala ◽  
Yangwei Shi ◽  
...  
Keyword(s):  
Surface Passivation ◽  
Metal Halide ◽  
Carrier Trapping ◽  
Mixed Cation ◽  
Halide Perovskites ◽  
Shallow Traps ◽  
Recombination Dynamics

We examine the role of surface passivation on carrier trapping and nonlinear recombination dynamics in hybrid metal-halide perovskites by means of excitation correlation photoluminescence (ECPL) spectroscopy. We find that carrier...

Recombination Dynamics in GaN/AlGaN Quantum Wells: The Role of Built-in Fields

2001 ◽  
Vol 188 (2) ◽  
pp. 851-855 ◽  
Author(s):  
D. Alderighi ◽  
A. Vinattieri ◽  
J. Kudrna ◽  
M. Colocci ◽  
A. Reale ◽  
...  
Keyword(s):  
Quantum Wells ◽  
Recombination Dynamics

The role of dephasing in some recent theories of quantum localization

1988 ◽  
Vol 88 (6) ◽  
pp. 3561-3563 ◽  
Author(s):  
Paul E. Parris ◽  
Philip Phillips
Keyword(s):  
Quantum Localization

Critical Role of Triplet Exciton Interface Trap States in Bilayer Films of NPB and Ir(piq)3

2011 ◽  
Vol 21 (13) ◽  
pp. 2522-2526 ◽  
Author(s):  
Vygintas Jankus ◽  
Chris Winscom ◽  
Andrew P. Monkman
Keyword(s):  
Critical Role ◽  
Triplet Exciton ◽  
Interface Trap ◽  
Trap States ◽  
Bilayer Films

scholarly journals Recombination dynamics in CsPbBr_3 nanocrystals: role of surface states

2017 ◽  
Vol 7 (12) ◽  
pp. 4367 ◽  
Author(s):  
Fabio Gabelloni ◽  
Francesco Biccari ◽  
Giulia Andreotti ◽  
Dario Balestri ◽  
Simona Checcucci ◽  
...  
Keyword(s):  
Surface States ◽  
Recombination Dynamics

scholarly journals Large-Area Nanocrystalline Caesium Lead Chloride Thin Films: A Focus on the Exciton Recombination Dynamics

Nanomaterials ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 434
Author(s):  
Naomi Falsini ◽  
Nicola Calisi ◽  
Giammarco Roini ◽  
Andrea Ristori ◽  
Francesco Biccari ◽  
...  
Keyword(s):  
Thin Films ◽  
Quantitative Information ◽  
Lead Chloride ◽  
Large Area ◽  
Temperature Dependent ◽  
Time Resolved ◽  
White Leds ◽  
Halide Perovskites ◽  
Recombination Dynamics

Caesium lead halide perovskites were recently demonstrated to be a relevant class of semiconductors for photonics and optoelectronics. Unlike CsPbBr3 and CsPbI3, the realization of high-quality thin films of CsPbCl3, particularly interesting for highly efficient white LEDs when coupled to converting phosphors, is still a very demanding task. In this work we report the first successful deposition of nanocrystalline CsPbCl3 thin films (70–150 nm) by radio frequency magnetron sputtering on large-area substrates. We present a detailed investigation of the optical properties by high resolution photoluminescence (PL) spectroscopy, resolved in time and space in the range 10–300 K, providing quantitative information concerning carriers and excitons recombination dynamics. The PL is characterized by a limited inhomogeneous broadening (~15 meV at 10 K) and its origin is discussed from detailed analysis with investigations at the micro-scale. The samples, obtained without any post-growth treatment, show a homogeneous PL emission in spectrum and intensity on large sample areas (several cm2). Temperature dependent and time-resolved PL spectra elucidate the role of carrier trapping in determining the PL quenching up to room temperature. Our results open the route for the realization of large-area inorganic halide perovskite films for photonic and optoelectronic devices.

Recombination dynamics in InGaN/GaN quantum wells: role of the piezoelectric field versus carrier localization

2004 ◽  
Vol 1 (6) ◽  
pp. 1397-1402 ◽  
Author(s):  
A. Vinattieri ◽  
M. Colocci ◽  
F. Rossi ◽  
C. Ferrari ◽  
N. Armani ◽  
...  
Keyword(s):  
Quantum Wells ◽  
Carrier Localization ◽  
Field Versus ◽  
Piezoelectric Field ◽  
Recombination Dynamics
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