Effects of water intrusion on the charge-carrier dynamics, performance, and stability of dye-sensitized solar cells

2012 ◽  
Vol 5 (11) ◽  
pp. 9492 ◽  
Author(s):  
Kai Zhu ◽  
Song-Rim Jang ◽  
Arthur J. Frank
Keyword(s):  
Solar Cells ◽  
Charge Carrier ◽  
Dye Sensitized Solar Cells ◽  
Carrier Dynamics ◽  
Water Intrusion ◽  
Dye Sensitized ◽  
Charge Carrier Dynamics ◽  
Sensitized Solar Cells

Correlating excited state and charge carrier dynamics with photovoltaic parameters of perylene dye sensitized solar cells: influences of an alkylated carbazole ancillary electron-donor

2017 ◽  
Vol 19 (3) ◽  
pp. 2549-2556 ◽  
Author(s):  
Yang Li ◽  
Junting Wang ◽  
Yi Yuan ◽  
Min Zhang ◽  
Xiandui Dong ◽  
...  
Keyword(s):  
Solar Cells ◽  
Excited States ◽  
Dye Sensitized Solar Cells ◽  
Carrier Dynamics ◽  
Charge Carriers ◽  
Dye Sensitized ◽  
Charge Carrier Dynamics ◽  
Photovoltaic Parameters ◽  
Perylene Dye ◽  
Sensitized Solar Cells

Two perylene dyes characteristic of electron-donors phenanthrocarbazole (PC) and carbazyl functionalized PC are selected to study the complicated dynamics of excited states and charge carriers, which underlie the photovoltaic parameters of dye-sensitized solar cells (DSCs).

TiO2 Surface State Control for Dye Sensitized Solar Cells with High Efficiency and the Solidification -Fabrication of Charge Carrier Path

2007 ◽  
Vol 1031 ◽  
Author(s):  
Fumi Inakazu ◽  
Yuhei Ogomi ◽  
Yusuke Noma ◽  
Yoshihisa Fujita ◽  
Mitsuru Kono ◽  
...  
Keyword(s):  
Solar Cells ◽  
Charge Carrier ◽  
Surface State ◽  
Dye Sensitized Solar Cells ◽  
High Electron ◽  
Nano Materials ◽  
Dye Sensitized ◽  
Self Organized ◽  
Dipping Process ◽  
Sensitized Solar Cells

AbstractImprovement of photovoltaic performance for dye sensitized solar cells (DSC) is discussed in terms of electron-path and ion-path. In order to make electron path, we focused on passivation of TiO2 surface states which are observed by thermally stimulated current (TSC). The TiO2 surface was well-passivated with dye molecules under pressurized CO2 atmosphere. It was found that DSC cells prepared by a CO2 process (Cell-CO2) had higher efficiency than those prepared by a conventional dipping process (Cell-DIP) and the higher efficiency was associated with low TiO2-surface state, high electron diffusion coefficient and long electron life time in TiO2 for the Cell-CO2. In addition, dye-staining under pressurized CO2 atmosphere had advantages over a conventional dipping process on rapid dye-uptake and less dye aggregation. In order to fabricate ion-path in solidified electrolyte, we focused on surface modification of nano-materials. Surface of nano-materials such as TiO2-nanoparticles and porous alumina films were modified with imidazolium iodide moieties consisting of long alkyl chains which render surface-molecules self-organized. Redox-species are concentrated on the self-organized molecules and make ion-path. We propose quasi-solid electrolyte system consisting of two layers having different charge carrier concentration to keep high photoconversion efficiencies even after solidification.

scholarly journals Role of lithium and co-existing cations in electrolyte to improve performance of dye-sensitized solar cells

RSC Advances ◽  
2014 ◽  
Vol 4 (41) ◽  
pp. 21517-21520 ◽  
Author(s):  
Soichiro Taya ◽  
Shota Kuwahara ◽  
Qing Shen ◽  
Taro Toyoda ◽  
Kenji Katayama
Keyword(s):  
Solar Cells ◽  
Dye Sensitized Solar Cells ◽  
Carrier Dynamics ◽  
Improve Performance ◽  
Dye Sensitized ◽  
Mixed Cation ◽  
Sensitized Solar Cells

The performance and related carrier dynamics in dye-sensitized solar cells in mixed cation electrolytes were evaluated.

Judicious engineering of a metal-free perylene dye for high-efficiency dye sensitized solar cells: the control of excited state and charge carrier dynamics

2017 ◽  
Vol 5 (7) ◽  
pp. 3514-3522 ◽  
Author(s):  
Lin Yang ◽  
Shu Chen ◽  
Jing Zhang ◽  
Junting Wang ◽  
Min Zhang ◽  
...  
Keyword(s):  
High Efficiency ◽  
Power Conversion ◽  
Dye Sensitized Solar Cells ◽  
Carrier Dynamics ◽  
High Power Conversion Efficiency ◽  
Dye Sensitized ◽  
Charge Carrier Dynamics ◽  
Donor Acceptor ◽  
Perylene Dye ◽  
Sensitized Solar Cells

A donor–acceptor perylene dye constructed with a bulky perylene based electron donor has achieved a high power conversion efficiency of 11.5% under the air mass 1.5 global conditions.

scholarly journals On how ancillary ligand substitution affects the charge carrier dynamics in dye-sensitized solar cells

RSC Advances ◽  
2018 ◽  
Vol 8 (35) ◽  
pp. 19465-19469
Author(s):  
Hashem Shahroosvand ◽  
Saeid Abaspour ◽  
Babak Pashaei ◽  
Babak Nemati Bideh
Keyword(s):  
Conversion Efficiency ◽  
Power Conversion ◽  
Dye Sensitized Solar Cells ◽  
Ligand Substitution ◽  
Carrier Dynamics ◽  
Ancillary Ligand ◽  
Dye Sensitized ◽  
Charge Carrier Dynamics ◽  
Electron Conversion ◽  
Sensitized Solar Cells

With respect to N3, S3 which contained a phenTz (1,10-phenanthroline 5-tetrazole) ancillary ligand showed outstanding improvements in molar extinction coefficient (ε) as well as increases in power conversion efficiency (PCE) and incident photon-to-electron conversion efficiency (IPCE).

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