Enhanced Photovoltaic Performance Of Dye-Sensitized Solar Cells Via Sensitization Of Nanocrystalline Tio 2films With Metal -Free Indoline Dye

2021 ◽  
Vol 30 (1) ◽  
pp. 78-81
Author(s):  
Swati Sahu ◽  
Rajesh Awasthy ◽  
Mohan Patel ◽  
Anil Verma ◽  
Sanjay Tiwari
Keyword(s):  
Solar Cells ◽  
Charge Transfer ◽  
Photovoltaic Performance ◽  
Dye Sensitized Solar Cells ◽  
Absorption Bands ◽  
Conjugated Molecules ◽  
Metal Free ◽  
Dye Sensitized ◽  
Electron Transitions ◽  
Sensitized Solar Cells

D149, a metal-free indoline dye, is one of the most promising sensitizers for dye-sensitized solar cells (DSSCs). The D149 sensitizer with the solvent acetonitrile gives two distinct absorption bands: first band is in the region of 350-430 nm due to (π–π*) electron transitions of the conjugated molecules, and the next in the region of 430-614 nm can be allocated to an intermolecular charge transfer (ICT) between the electron-donor and electron-acceptor anchoring moieties.Upon optimization, the device given a Jsc of 13.2mA/cm2, Voc of 752mV, and FF of 0.749 % and the conversion efficiency of 7.4%.

Photovoltaic performance of natural metal free photo-sensitizer for TiO2 based dye-sensitized solar cells

Optik ◽  
2019 ◽  
Vol 181 ◽  
pp. 619-626 ◽  
Author(s):  
A. Arulraj ◽  
G. Senguttuvan ◽  
S. Veeramani ◽  
V. Sivakumar ◽  
B. Subramanian
Keyword(s):  
Solar Cells ◽  
Photovoltaic Performance ◽  
Dye Sensitized Solar Cells ◽  
Metal Free ◽  
Dye Sensitized ◽  
Photo Sensitizer ◽  
Sensitized Solar Cells

Co-sensitization of Ru(ii) complex with terthiophene-based D–π–π–A metal-free organic dyes for highly efficient dye-sensitized solar cells: influence of anchoring group on molecular geometry and photovoltaic performance

2018 ◽  
Vol 42 (14) ◽  
pp. 11430-11437 ◽  
Author(s):  
Mohamed R. Elmorsy ◽  
Rui Su ◽  
Ahmed A. Fadda ◽  
H. A. Etman ◽  
Eman H. Tawfik ◽  
...  
Keyword(s):  
Solar Cells ◽  
Organic Dyes ◽  
Photovoltaic Performance ◽  
Dye Sensitized Solar Cells ◽  
Molecular Geometry ◽  
Metal Free ◽  
Dye Sensitized ◽  
Highly Efficient ◽  
Anchoring Group ◽  
Sensitized Solar Cells

In this work, we studied the photovoltaic performance of two novel metal-free organic dyes carrying the same donor but with different anchoring moieties.

scholarly journals Versatility of Photosensitizers in Dye-Sensitized Solar Cells (DSSCs)

2021 ◽  
Vol 12 (6) ◽  
pp. 8543-8560
Keyword(s):  
Solar Cells ◽  
Organic Dyes ◽  
Dye Sensitized Solar Cells ◽  
Natural Dyes ◽  
Absorption Bands ◽  
Environmental Friendliness ◽  
Metal Free ◽  
Dye Sensitized ◽  
Dye Aggregation ◽  
Sensitized Solar Cells

Because of their scientific relevance in the field of energy conversion, dye-sensitized solar cells (DSSCs) have become a focus of major studies in the last two decades. At present, DSSC is generally either sensitized with inorganic dyes, metal-free organic dyes, or natural dyes. These dyes have emerged as potential alternatives to costly and scarce Ru-based dyes because of being economical, simple attainability, ease of preparation, and environmental friendliness. The majority of alternatives to Ru-based dyes have so far proved to be inferior to Ru-based dyes due to their fragility, narrow absorption bands, and unfavorable dye aggregation. The present review focuses on recent research about sensitizers comprising inorganic dyes, metal-free organic dyes, and natural dyes for DSSCs. Following the introduction, Section 2 describes the DSSC operation, including the essential operational principles and basic components of a DSSC. Section 3 introduces various photosensitizers used in DSSC, and Section 4 states the conclusion and outlook on the field of DSSC research. It also describes and summarizes related sensitizers and their efficiency.

Co-sensitization of amphiphilic ruthenium (II) sensitizer with a metal free organic dye: Improved photovoltaic performance of dye sensitized solar cells

2013 ◽  
Vol 14 (5) ◽  
pp. 1237-1241 ◽  
Author(s):  
Surya Prakash Singh ◽  
M. Chandrasekharam ◽  
Kankatala S.V. Gupta ◽  
Ashraful Islam ◽  
Liyuan Han ◽  
...  
Keyword(s):  
Solar Cells ◽  
Photovoltaic Performance ◽  
Dye Sensitized Solar Cells ◽  
Organic Dye ◽  
Metal Free ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

scholarly journals Edge-selenated graphene nanoplatelets as durable metal-free catalysts for iodine reduction reaction in dye-sensitized solar cells

2016 ◽  
Vol 2 (6) ◽  
pp. e1501459 ◽  
Author(s):  
Myung Jong Ju ◽  
In-Yup Jeon ◽  
Hong Mo Kim ◽  
Ji Il Choi ◽  
Sun-Min Jung ◽  
...  
Keyword(s):  
Solar Cells ◽  
Photovoltaic Performance ◽  
Dye Sensitized Solar Cells ◽  
Graphene Nanoplatelets ◽  
Mechanochemical Reaction ◽  
Pristine Graphene ◽  
Metal Free ◽  
Dye Sensitized ◽  
Sensitized Solar Cells ◽  
Carbon Based

Metal-free carbon-based electrocatalysts for dye-sensitized solar cells (DSSCs) are sufficiently active in Co(II)/Co(III) electrolytes but are not satisfactory in the most commonly used iodide/triiodide (I−/I3−) electrolytes. Thus, developing active and stable metal-free electrocatalysts in both electrolytes is one of the most important issues in DSSC research. We report the synthesis of edge-selenated graphene nanoplatelets (SeGnPs) prepared by a simple mechanochemical reaction between graphite and selenium (Se) powders, and their application to the counter electrode (CE) for DSSCs in both I−/I3− and Co(II)/Co(III) electrolytes. The edge-selective doping and the preservation of the pristine graphene basal plane in the SeGnPs were confirmed by various analytical techniques, including atomic-resolution transmission electron microscopy. Tested as the DSSC CE in both Co(bpy)32+/3+ (bpy = 2,2′-bipyridine) and I−/I3− electrolytes, the SeGnP-CEs exhibited outstanding electrocatalytic performance with ultimately high stability. The SeGnP-CE–based DSSCs displayed a higher photovoltaic performance than did the Pt-CE–based DSSCs in both SM315 sensitizer with Co(bpy)32+/3+ and N719 sensitizer with I−/I3− electrolytes. Furthermore, the I3− reduction mechanism, which has not been fully understood in carbon-based CE materials to date, was clarified by an electrochemical kinetics study combined with density functional theory and nonequilibrium Green’s function calculations.

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