Photoinduced Charge Accumulation and Prolonged Multielectron Storage for the Separation of Light and Dark Reaction

2020 ◽  
Vol 142 (37) ◽  
pp. 15722-15728
Author(s):  
Martin Schulz ◽  
Nina Hagmeyer ◽  
Frerk Wehmeyer ◽  
Grace Lowe ◽  
Marco Rosenkranz ◽  
...  
Keyword(s):  
Charge Accumulation ◽  
Dark Reaction ◽  
Photoinduced Charge

scholarly journals Photoinduced electron transfer in a molecular dyad by nanosecond pump–pump–probe spectroscopy

2018 ◽  
Vol 17 (7) ◽  
pp. 903-909 ◽  
Author(s):  
M.-H. Ha-Thi ◽  
V.-T. Pham ◽  
T. Pino ◽  
V. Maslova ◽  
A. Quaranta ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Photoinduced Electron Transfer ◽  
Charge Accumulation ◽  
Pump Probe ◽  
Probe Spectroscopy ◽  
Photoinduced Charge

Photoinduced charge accumulation was investigated in a molecular dyad composed of a porphyrin chromophore and a ruthenium-based catalyst by pump–pump–probe experiments.

[Cr(ttpy)2]3+ as a multi-electron reservoir for photoinduced charge accumulation

2019 ◽  
Vol 48 (20) ◽  
pp. 6800-6811 ◽  
Author(s):  
Rajaa Farran ◽  
Long Le-Quang ◽  
Jean-Marie Mouesca ◽  
Vincent Maurel ◽  
Damien Jouvenot ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Visible Light ◽  
Tertiary Amine ◽  
Visible Light Irradiation ◽  
Transfer Reaction ◽  
Electron Transfer Reaction ◽  
Light Irradiation ◽  
Charge Accumulation ◽  
Photoinduced Charge

Under visible light irradiation [Cr(ttpy)2]3+ can be reduced twice by a tertiary amine; the photoreduction processes are accelerated in the presence of [Ru(bpy)3]2+ acting as an antenna thanks to an efficient electron transfer reaction from [Ru(bpy)3]2+* to [Cr(ttpy)2]3+.

Light-driven charge accumulation of a molecular Cu(I) complex for storage of photoredox equivalents

2019 ◽  
Author(s):  
Martin Schulz ◽  
Nina Hagmeyer ◽  
Frerk Wehmeyer ◽  
Johannes G. Vos ◽  
Benjamin Dietzek
Keyword(s):  
Energy Storage ◽  
Methyl Viologen ◽  
Electron Acceptors ◽  
Prolonged Storage ◽  
Charge Accumulation ◽  
Free System ◽  
Dark Reaction ◽  
Metal Free ◽  
Solar Battery ◽  
Storage Times

The diurnal day/night cycle is presently of great interest for harvesting solar energy aimed at rendering suitable energy storage schemes. To this end we present a noble-metal free system based on a Cu(I) 4H-imidazolate complex, that is efficiently photoreduced in the presence of a sacrificial donor. The two-electron reduced species obtained can be stored in the dark for more than 14 hours. In a dark reaction, the photoredox equivalents can subsequently be transferred to the electron acceptors methyl viologen or oxygen, while the starting Cu(I) complex is almost completely regained. Repetition of this process revealed a charging capacity of 72% after four cycles. The implications of light-driven charge accumulation and prolonged storage times for solar battery and photoredox catalysis are discussed

Light-driven charge accumulation of a molecular Cu(I) complex for storage of photoredox equivalents

2019 ◽  
Author(s):  
Martin Schulz ◽  
Nina Hagmeyer ◽  
Frerk Wehmeyer ◽  
Johannes G. Vos ◽  
Benjamin Dietzek
Keyword(s):  
Energy Storage ◽  
Methyl Viologen ◽  
Electron Acceptors ◽  
Prolonged Storage ◽  
Charge Accumulation ◽  
Free System ◽  
Dark Reaction ◽  
Metal Free ◽  
Solar Battery ◽  
Storage Times

The diurnal day/night cycle is presently of great interest for harvesting solar energy aimed at rendering suitable energy storage schemes. To this end we present a noble-metal free system based on a Cu(I) 4H-imidazolate complex, that is efficiently photoreduced in the presence of a sacrificial donor. The two-electron reduced species obtained can be stored in the dark for more than 14 hours. In a dark reaction, the photoredox equivalents can subsequently be transferred to the electron acceptors methyl viologen or oxygen, while the starting Cu(I) complex is almost completely regained. Repetition of this process revealed a charging capacity of 72% after four cycles. The implications of light-driven charge accumulation and prolonged storage times for solar battery and photoredox catalysis are discussed

scholarly journals Коррелированное изменение электрических характеристик тонкопленочного полевого транзистора при модификации физических свойств его оксидного полупроводникового канала (InZnO : N)

2018 ◽  
Vol 44 (20) ◽  
pp. 95
Author(s):  
А.Б. Черемисин ◽  
Н.А. Кулдин
Keyword(s):  
Field Effect Transistor ◽  
Oxide Semiconductor ◽  
Charge Accumulation ◽  
Electrical Parameters ◽  
Oxide Semiconductors ◽  
Current Voltage ◽  
Capacitance Voltage ◽  
Current Voltage Characteristics ◽  
Effect Transistor ◽  
Photoinduced Charge

AbstractWe have studied changes in the transmission and current–voltage characteristics of a thin-film field-effect transistor (TFT) during modification of the physical properties of its oxide semiconductor channel based on InZnO:N layer. Modification of the electrical parameters of the device was based on the phenomenon of photoinduced charge accumulation in the semiconductor. It is established that the slopes and intercepts of the capacitance–voltage ( C _G– V _G) and transmission ( I _D– V _G) curves of the TFT under illumination exhibit correlated similar variations. The obtained results justify joint use of the C _G– V _G and I _D– V _G curves in the analysis of peculiarities of the energy band structure of oxide semiconductors.

scholarly journals Photoinduced charge accumulation by metal ion-coupled electron transfer

2015 ◽  
Vol 17 (37) ◽  
pp. 24001-24010 ◽  
Author(s):  
Annabell G. Bonn ◽  
Oliver S. Wenger
Keyword(s):  
Electron Transfer ◽  
Lewis Acid ◽  
Metal Ion ◽  
Lewis Base ◽  
Charge Accumulation ◽  
Superoxide Anions ◽  
Strong Lewis Acid ◽  
Photoinduced Charge

Strong Lewis acid/Lewis base interactions between Sc3+and superoxide anions permit the light-driven accumulation of two positive charges on oligotriarylamine units with appended Ru(ii) photosensitizers.

Dynamics of photoinduced charge-transfer in dimethylamino-substituted triphenylphosphines

1996 ◽  
Vol 93 ◽  
pp. 1697-1713 ◽  
Author(s):  
P Changenet ◽  
P Plaza ◽  
MM Martin ◽  
YH Meyer ◽  
W Rettig
Keyword(s):  
Charge Transfer ◽  
Photoinduced Charge Transfer ◽  
Photoinduced Charge
Sign in / Sign up

Export Citation Format

Share Document