Control of Charge Dynamics through a Charge-Separation Interface for All-Solid Perovskite-Sensitized Solar Cells

ChemPhysChem ◽  
2014 ◽  
Vol 15 (6) ◽  
pp. 1062-1069 ◽  
Author(s):  
Yuhei Ogomi ◽  
Kenji Kukihara ◽  
Shen Qing ◽  
Taro Toyoda ◽  
Kenji Yoshino ◽  
...  
Keyword(s):  
Solar Cells ◽  
Charge Separation ◽  
Charge Dynamics ◽  
A Charge ◽  
Sensitized Solar Cells

Molecular-structure control of electron transfer dynamics of push–pull porphyrins as sensitizers for NiO based dye sensitized solar cells

RSC Advances ◽  
2016 ◽  
Vol 6 (81) ◽  
pp. 77184-77194 ◽  
Author(s):  
Lei Zhang ◽  
Ludovic Favereau ◽  
Yoann Farre ◽  
Antoine Maufroy ◽  
Yann Pellegrin ◽  
...  
Keyword(s):  
Molecular Structure ◽  
Electron Transfer ◽  
Solar Cells ◽  
Charge Separation ◽  
Photovoltaic Performance ◽  
Dye Sensitized Solar Cells ◽  
Charge Recombination ◽  
Structure Control ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

Zn(ii)-porphyrin dyes for NiO dye-sensitized solar cells showed surprisingly rapid charge recombination, in spite of their push–pull character. Appending a secondary acceptor prolonged charge separation and led to improved photovoltaic performance.

The effect of Ni(CH3COO)2 post-treatment on the charge dynamics in p-type NiO dye-sensitized solar cells

2015 ◽  
Vol 50 (20) ◽  
pp. 6668-6676 ◽  
Author(s):  
Qian Liu ◽  
Lifang Wei ◽  
Shuai Yuan ◽  
Xin Ren ◽  
Yin Zhao ◽  
...  
Keyword(s):  
Solar Cells ◽  
Dye Sensitized Solar Cells ◽  
Post Treatment ◽  
Charge Dynamics ◽  
Dye Sensitized ◽  
P Type ◽  
Sensitized Solar Cells

Parameters Influencing Charge Separation in Solid-State Dye-Sensitized Solar Cells Using Novel Hole Conductors

2006 ◽  
Vol 16 (14) ◽  
pp. 1832-1838 ◽  
Author(s):  
J. E. Kroeze ◽  
N. Hirata ◽  
L. Schmidt-Mende ◽  
C. Orizu ◽  
S. D. Ogier ◽  
...  
Keyword(s):  
Solar Cells ◽  
Solid State ◽  
Charge Separation ◽  
Dye Sensitized Solar Cells ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

Comparison of charge transfer dynamics in polypyridyl ruthenium sensitizers for solar cells and water splitting systems

2018 ◽  
Vol 20 (11) ◽  
pp. 7710-7720 ◽  
Author(s):  
Iwona Grądzka ◽  
Mateusz Gierszewski ◽  
Jerzy Karolczak ◽  
Marcin Ziółek
Keyword(s):  
Solar Cells ◽  
Charge Transfer ◽  
Charge Separation ◽  
Separation Efficiency ◽  
Dye Sensitized Solar Cells ◽  
Photoelectrochemical Cells ◽  
Dye Sensitized ◽  
Charge Separation Efficiency ◽  
Charge Transfer Dynamics ◽  
Sensitized Solar Cells

Standard ruthenium components of dye-sensitized solar cells (sensitizer N719) and dye-sensitized photoelectrochemical cells (sensitizer RuP) are investigated to compare their photodynamics and charge separation efficiency.

scholarly journals Super Broadband-Sensitive Upconversion in Tm and Ni Codoped Perovskites

2019 ◽  
Vol 2019 ◽  
pp. 1-11
Author(s):  
Hom Nath Luitel ◽  
Shintaro Mizuno ◽  
Yasuhiko Takeda
Keyword(s):  
Solar Cells ◽  
Transition Probabilities ◽  
Optical Transition ◽  
Dye Sensitized Solar Cells ◽  
Charge Balance ◽  
Alkali Ions ◽  
Dye Sensitized ◽  
A Charge ◽  
Sensitized Solar Cells ◽  
Balance Mechanism

We investigated broadband-sensitive upconversion (UC) processes in a series of Tm- and Ni-sensitized ABO3 (A = Ca/Sr/Ba and B = Ti/Zr/Hf) perovskites. We have designed combinations of the sensitizers and host cations such that super broad solar radiation ranging from 900 nm to nearly 2000 nm can be efficiently upconverted to 800 nm and shorter wavelengths. The Ni2+ ions located at the center of O2− octahedra absorbed photons in the 900–1500 nm range and transferred those energies to the nearby Tm3+ ions. The Tm3+ ions upconverted those energies at 800 nm, along with the energies absorbed by themselves in the 1100–1250 and 1550–2000 nm ranges, exhibiting super broadband sensitivity. Among the ABO3:Tm, Ni (A = Ca/Sr/Ba and B = Ti/Zr/Hf) upconverters, CaTiO3:Tm, Ni exhibited the best performance due to its most distorted crystal structure, which intensified the emission and absorption extents by increasing the optical transition probabilities of Tm3+ and Ni2+ ions. Introduction of alkali ions at the Ca2+ sites and Nb5+ ions at the Ti4+ sites intensified the UC emission by many folds, mainly due to a charge balance mechanism. At the same time, bigger and smaller codoped alkali ions created an asymmetric crystal field around the active ions and further enhanced the UC emission. Importantly, the upconverted photons are within the absorption edges of GaAs, Cu2ZnSnS4, and dye-sensitized solar cells making wider applications of these upconverters besides crystalline Si solar cells.

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