Study of optical losses in mechanically stacked dye-sensitized/CdTe tandem solar cells

2013 ◽  
Vol 1538 ◽  
pp. 221-226
Author(s):  
Vincent Barrioz ◽  
Simon Hodgson ◽  
Peter Holliman ◽  
Arthur Connell ◽  
Giray Kartopu ◽  
...  
Keyword(s):  
Solar Cells ◽  
Dye Sensitized Solar Cells ◽  
Optical Losses ◽  
Absorption Bands ◽  
Tandem Solar Cells ◽  
Dye Sensitized ◽  
Dye Absorption ◽  
Tandem Structure ◽  
Photo Electrode ◽  
Sensitized Solar Cells

ABSTRACTIn a constant effort to capture effectively more of the spectral range from the sun, multi-junction cells are being investigated. In this context, the marriage of thin film and dye-sensitized solar cells (DSC) PV technologies may be able to offer greater efficiency whilst maintaining the benefits of each individual technology. DSC devices offer advantages in the nature of both the metal oxide photo-electrode and dye absorption bands, which can be tuned to vary the optical performance of this part of a tandem device, while CdTe cells absorb the majority of light above their band-gap in only a few microns of thickness. The key challenge is to assess the optical losses with the goal of reaching a net gain in photocurrent and consequently increased conversion efficiency. This study reports on the influence of optical losses from various parts of the stacked tandem structure using UV-VIS spectrometry and EQE measurements. A net gain in photocurrent was achieved from a model developed for the DSC/CdTe mechanically stacked tandem structure.

Effects of Activated Carbon Counter Electrode on Bifacial Dye Sensitized Solar Cells (DSSCs)

2021 ◽  
Vol 1016 ◽  
pp. 863-868
Author(s):  
Tika Erna Putri ◽  
Yuan Hao ◽  
Fadzai Lesley Chawarambwa ◽  
Hyunwoong Seo ◽  
Min Kyu Son ◽  
...  
Keyword(s):  
Solar Cells ◽  
Activated Carbon ◽  
Counter Electrode ◽  
Low Cost ◽  
Short Circuit ◽  
Dye Sensitized Solar Cells ◽  
Short Circuit Current ◽  
Optical Losses ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

The losses of solar cells are consisted of electrical losses and optical losses. Optical losses chiefly reduce the short-circuit current. Here we apply bifacial cell approach to increase light absorption and the short-circuit current of dye sensitized solar cells (DSSCs). We have employed activated carbon (AC) as a very low cost counter electrode, an alternative to Pt counter electrode. Addition of dimethyl sulfoxide (DMSO) and titanium carbonitride (TiCN) to AC increase the efficiency of bifacial DSSC at a mirror angle of from 5.10% to and , respectively. These results indicate that AC has the potential to replace Pt as a very low cost counter electrode of bifacial DSSCs. The bifacial DSSC system using double plane mirrors improve PCE to for Pt counter electrode at a mirror angle of , and for AC counter electrode at a mirror angle of , respectively.

LARGE-SIZED DYE-SENSITIZED SOLAR CELLS WITH TiO2 CEMENTED AND PROTECTED SILVER GRIDS

2012 ◽  
Vol 05 (01) ◽  
pp. 1250010 ◽  
Author(s):  
ZHANG LAN ◽  
JIHUAI WU ◽  
JIANMING LIN ◽  
MIAOLIANG
Keyword(s):  
Solar Cells ◽  
High Performance ◽  
Single Cells ◽  
Dye Sensitized Solar Cells ◽  
Blocking Layer ◽  
Counter Electrodes ◽  
Dye Sensitized ◽  
Photo Electrode ◽  
Sensitized Solar Cells

Large-sized dye-sensitized solar cells were prepared with TiO2 cemented and protected Ag grids in the photo and counter electrodes. The addition of high conductive TiO2 cemented Ag grids can maintain high performance with the enlargement of the cells. The preparation of the compact TiO2 layer on the Ag grids can prevent the corrosion of the electrolyte, moreover, when it is prepared on the whole area of the photo electrode, it also can play as the blocking layer for further enhancing the performance of cells. The presented method shows a simple and efficient way to prepare high performance large single cells.

The Effect of Paste Preparation and Annealing Temperature of ZnO Photoelectrode to Dye-Sensitized Solar Cells (DSSC) Performance

2014 ◽  
Vol 896 ◽  
pp. 183-186 ◽  
Author(s):  
Ahmad Syukron ◽  
Ruri Agung Wahyuono ◽  
Dyah Sawitri ◽  
Doty Dewi Risanti
Keyword(s):  
Solar Cells ◽  
Annealing Temperature ◽  
Dye Sensitized Solar Cells ◽  
Particle Diameter ◽  
Pt Catalyst ◽  
Zno Nps ◽  
Dye Sensitized ◽  
Spherical Aggregate ◽  
Photo Electrode ◽  
Sensitized Solar Cells

Dye-sensitized Solar Cells (DSSCs) have been successfully fabricated by using ZnO nanoparticles (NPs). The ZnO photoelectrode was prepared by using pastes solved in water-based and ethanol-based solvent. The ZnO NPs was synthesized by copresipitation method, prepared by reaction from Zinc Acetate with diethylene glycol (DEG). The obtained ZnO NPs has 13.93 nm particle diameter. Scanning Electron Microscopy (SEM) showed that ZnO NPs from monodisperse spherical aggregate with particle diameter of approximately 300nm. The band gap was found of 3.29eV. Variations of annealing temperature were carried out in photo-electrode fabrication. This work employs extracts from mangosteen pericarp as natural dye for fabrication of DSSCs. DSSCs were fabricated in sandwich structure with redox couple electrolyte I3-/I- and Pt-catalyst counter electrode. The best efficiency of 0.11% (Voc = 232.4 mV, Jsc = 111.6 µA/cm2, FF = 61.41 %) was obtained for DSSCs using ZnO photo-electrode prepared by ethanol-based paste and 200°C of annealing temperature.

Application of ZnO micro rods on the composite photo-electrode of dye sensitized solar cells

2017 ◽  
Vol 24 (1) ◽  
pp. 285-289 ◽  
Author(s):  
Tung-Lung Wu ◽  
Teen-Hang Meen ◽  
Shi-Mian Chao ◽  
Liang-Wen Ji ◽  
Li-Chi Shih ◽  
...  
Keyword(s):  
Solar Cells ◽  
Dye Sensitized Solar Cells ◽  
Dye Sensitized ◽  
Photo Electrode ◽  
Sensitized Solar Cells

Importance of fluorescence lifetimes for efficient indoline dyes in dye-sensitized solar cells

RSC Advances ◽  
2015 ◽  
Vol 5 (71) ◽  
pp. 57721-57724 ◽  
Author(s):  
M. Matsui ◽  
R. Aoki ◽  
D. Nishiwaki ◽  
Y. Kubota ◽  
K. Funabiki ◽  
...  
Keyword(s):  
Solar Cells ◽  
Molecular Design ◽  
Dye Sensitized Solar Cells ◽  
Fluorescence Lifetimes ◽  
Absorption Bands ◽  
Dye Sensitized ◽  
Homo And Lumo ◽  
Sensitized Solar Cells

To make a molecular design of efficient indoline dyes, fluorescence lifetimes should be longer than ca. 0.8 ns in chloroform, in addition to suitable HOMO and LUMO levels and bathochromic UV-vis absorption bands.

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