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).

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 Performance of natural-dye-sensitized solar cells by ZnO nanorod and nanowall enhanced photoelectrodes

2017 ◽  
Vol 8 ◽  
pp. 287-295 ◽  
Author(s):  
Saif Saadaoui ◽  
Mohamed Aziz Ben Youssef ◽  
Moufida Ben Karoui ◽  
Rached Gharbi ◽  
Emanuele Smecca ◽  
...  
Keyword(s):  
Solar Cells ◽  
Short Circuit ◽  
Dye Sensitized Solar Cells ◽  
Short Circuit Current ◽  
Growth Time ◽  
Dye Sensitized ◽  
Different Temperatures ◽  
Photovoltaic Parameters ◽  
Anchoring Groups ◽  
Sensitized Solar Cells

In this work, two natural dyes extracted from henna and mallow plants with a maximum absorbance at 665 nm were studied and used as sensitizers in the fabrication of dye-sensitized solar cells (DSSCs). Fourier transform infrared (FTIR) spectra of the extract revealed the presence of anchoring groups and coloring constituents. Two different structures were prepared by chemical bath deposition (CBD) using zinc oxide (ZnO) layers to obtain ZnO nanowall (NW) or nanorod (NR) layers employed as a thin film at the photoanode side of the DSSC. The ZnO layers were annealed at different temperatures under various gas sources. Indeed, the forming gas (FG) (N2/H2 95:5) was found to enhance the conductivity by a factor of 103 compared to nitrogen (N2) or oxygen (O2) annealing gas. The NR width varied between 40 and 100 nm and the length from 500 to 1000 nm, depending on the growth time. The obtained NWs had a length of 850 nm. The properties of the developed ZnO NW and NR layers with different thicknesses and their effect on the photovoltaic parameters were studied. An internal coverage of the ZnO NWs was also applied by the deposition of a thin TiO2 layer by reactive sputtering to improve the cell performance. The application of this layer increased the overall short circuit current J sc by seven times from 2.45 × 10−3 mA/cm2 to 1.70 × 10−2 mA /cm2.

Enhanced performance of a nanocrystalline dye-sensitized solar cell based on polyurethane dendrimers

RSC Advances ◽  
2015 ◽  
Vol 5 (40) ◽  
pp. 31404-31409 ◽  
Author(s):  
S. Veerapandian ◽  
S. Amudha ◽  
S. Austin Suthanthiraraj ◽  
M. Abdul Rahman ◽  
A. Sultan Nasar
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Dye Sensitized Solar Cells ◽  
Dye Sensitized Solar Cell ◽  
Fourth Generation ◽  
Dye Sensitized ◽  
Photovoltaic Parameters ◽  
Sensitized Solar Cells

The photovoltaic parameters of dye sensitized solar cells (DSSCs) fabricated with and without fourth generation polyurethane dendrimers have been discussed.

Investigation of the photoinduced electron injection processes for natural dye-sensitized solar cells: the impact of anchoring groups

RSC Advances ◽  
2016 ◽  
Vol 6 (88) ◽  
pp. 85125-85134 ◽  
Author(s):  
S. Akın ◽  
S. Açıkgöz ◽  
M. Gülen ◽  
C. Akyürek ◽  
S. Sönmezoğlu
Keyword(s):  
Solar Cells ◽  
Dye Sensitized Solar Cells ◽  
Electron Injection ◽  
Natural Dye ◽  
Natural Dyes ◽  
Dye Sensitized ◽  
Photovoltaic Parameters ◽  
Anchoring Groups ◽  
The Impact ◽  
Sensitized Solar Cells

In this study, nine different natural dyes having various anchoring groups were extracted from various plants and used as photo-sensitizers in DSSC applications. The photovoltaic parameters were investigated as a function of these anchoring groups.

Theoretical study of electronic structure and excited states properties of two dyes for dye-sensitized solar cells

2009 ◽  
Vol 107 (23-24) ◽  
pp. 2569-2577 ◽  
Author(s):  
Yuanzuo Li ◽  
Xiaohong Zhao ◽  
Huixing Li ◽  
Dezhi Jin ◽  
Fengcai Ma ◽  
...  
Keyword(s):  
Electronic Structure ◽  
Solar Cells ◽  
Excited States ◽  
Theoretical Study ◽  
Dye Sensitized Solar Cells ◽  
Dye Sensitized ◽  
Sensitized Solar Cells
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