Tribovoltaic Device Based on the W/WO3 Schottky Junction Operating through Hot Carrier Extraction

2021 ◽  
Author(s):  
Andris Šutka ◽  
Martins Zubkins ◽  
Artis Linarts ◽  
Linards Lapčinskis ◽  
Kaspars Ma̅lnieks ◽  
...  
Keyword(s):  
Schottky Junction ◽  
Hot Carrier ◽  
Carrier Extraction

Theoretical investigation of plasmon enhanced optically-coupled hot carrier extraction

2015 ◽  
Author(s):  
Jianfeng Yang ◽  
Yu Feng ◽  
Robert Patterson ◽  
Shujuan Huang ◽  
Santosh Shrestha ◽  
...  
Keyword(s):  
Theoretical Investigation ◽  
Hot Carrier ◽  
Carrier Extraction

scholarly journals Fundamental limits of hot carrier injection from metal in nanoplasmonics

Nanophotonics ◽  
2020 ◽  
Vol 9 (2) ◽  
pp. 453-471 ◽  
Author(s):  
Jacob B. Khurgin
Keyword(s):  
Momentum Conservation ◽  
Carrier Injection ◽  
Quantum Processes ◽  
Fundamental Limits ◽  
Hot Carrier ◽  
Hot Carrier Injection ◽  
Single Temperature ◽  
Carrier Extraction ◽  
Non Equilibrium

AbstractThe evolution of non-equilibrium carriers excited in the process of decay of surface plasmon polaritons (SPPs) in metal is described for each step – from the generation of carriers to their extraction from the metal. The relative importance of various carrier-generating mechanisms is discussed. It is shown that both the generation of carriers and their decay are inherently quantum processes as, for realistic illumination conditions, no more than a single SPP per nanoparticle exists at a given time. As a result, the distribution of non-equilibrium carriers cannot be described by a single temperature. It is also shown that the originally excited carriers that have not undergone a single electron-electron scattering event are practically the only ones that contribute to the injection. The role of momentum conservation in carrier extraction is discussed, and it is shown that, if all the momentum conservation rules are relaxed, it is the density of states in the semiconductor/dielectric that determines the ultimate injection efficiency. A set of recommendations aimed at improving the efficiency of plasmonic-assisted photodetection and (to a lesser degree) photocatalysis is made in the end.

Hot-Carrier Extraction in InAs/GaAs Quantum Dot Superlattice Solar Cells

2019 ◽  
Author(s):  
Yukihiro Harada ◽  
Naoto Iwata ◽  
Daiki Watanabe ◽  
Shigeo Asahi ◽  
Takashi Kita
Keyword(s):  
Solar Cells ◽  
Quantum Dot ◽  
Hot Carrier ◽  
Gaas Quantum Dot ◽  
Carrier Extraction

scholarly journals Hot Carrier Extraction from Multilayer Graphene

Nano Letters ◽  
2016 ◽  
Vol 16 (12) ◽  
pp. 8036-8036
Author(s):  
Roberto Urcuyo ◽  
Dinh Loc Duong ◽  
Patrick Sailer ◽  
Marko Burghard ◽  
Klaus Kern
Keyword(s):  
Multilayer Graphene ◽  
Hot Carrier ◽  
Carrier Extraction

scholarly journals Optimizing hot carrier effects in Pt-decorated plasmonic heterostructures

2019 ◽  
Vol 214 ◽  
pp. 387-397 ◽  
Author(s):  
Jorge U. Salmón-Gamboa ◽  
Mayela Romero-Gómez ◽  
Diane J. Roth ◽  
Matthew J. Barber ◽  
Pan Wang ◽  
...  
Keyword(s):  
Surface States ◽  
Hot Carrier ◽  
Nanoparticle Surface ◽  
Hot Carrier Effects ◽  
Carrier Extraction

Plasmonic heterostructures were designed to optimize hot carrier extraction by controlling nanoparticle surface states.

scholarly journals Hot carrier extraction in CH3NH3PbI3 unveiled by pump-push-probe spectroscopy

2019 ◽  
Vol 5 (11) ◽  
pp. eaax3620 ◽  
Author(s):  
Swee Sien Lim ◽  
David Giovanni ◽  
Qiannan Zhang ◽  
Ankur Solanki ◽  
Nur Fadilah Jamaludin ◽  
...  
Keyword(s):  
Excited State ◽  
Excited State Absorption ◽  
Hot Carrier ◽  
New Class ◽  
Lowest Unoccupied Molecular Orbital ◽  
Organic Acceptor ◽  
Energy States ◽  
Transient Spectroscopy ◽  
Probe Spectroscopy ◽  
Carrier Extraction

Halide perovskites are promising materials for development in hot carrier (HC) solar cells, where the excess energy of above-bandgap photons is harvested before being wasted as heat to enhance device efficiency. Presently, HC separation and transfer processes at higher-energy states remain poorly understood. Here, we investigate the excited state dynamics in CH3NH3PbI3 using pump-push-probe spectroscopy. It has its intrinsic advantages for studying these dynamics over conventional transient spectroscopy, albeit complementary to one another. By exploiting the broad excited-state absorption characteristics, our findings reveal the transfer of HCs from these higher-energy states into bathophenanthroline (bphen), an energy selective organic acceptor far above perovskite’s band edges. Complete HC extraction is realized only after overcoming the interfacial barrier formed at the heterojunction, estimated to be between 1.01 and 1.08 eV above bphen’s lowest unoccupied molecular orbital level. The insights gained here are essential for the development of a new class of optoelectronics.

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