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

Content Provider	Royal Society of Chemistry (RSC)
Author	Zhang, Jing Wang, Peng Wang, Junting Yang, Lin Chen, Shu Dong, Xiandui Zhang, Min
Copyright Year	2017
Abstract	Molecular engineering of a photosensitizing dye plays a vital role in the control of excited states and charge carriers in dye-sensitized solar cells (DSCs) for performance improvement. Herein we report three metal-free donor–acceptor organic dyes by conjugating electron donors triphenylamine–cyclopentadithiophene (TPA–CPDT), triphenylamine–phenanthrocarbazole (TPA–PC), and di(biphenyl)amine–phenanthrocarbazole (DBPA–PC) with electron acceptor 4-(7-ethynylbenzo[c][1,2,5]thiadiazol-4-yl)benzoic acid (EBTBA). The influences of electron donors on the energy levels, light absorption, dynamics of excited states and photogenerated charges, and photovoltaic parameters of DSCs were systematically analyzed via theoretical calculations and physical measurements. A DSC with dye SC-3 employing the bulky DBPA–PC electron donor achieved a high power conversion efficiency (PCE) of 11.5% measured under the air mass 1.5 global (AM1.5G) conditions, owing to the significantly reduced interfacial charge recombination. Femtosecond fluorescence upconversion measurements have unraveled that energy relaxation and electron injection both occur for dye molecules in the nonrelaxed hot excited states. Also, the rate constants of injecting electrons from dyes in the excited states to titania are very dispersive by over 1 order of magnitude, which could be mainly ascribed to the broad energy distribution of excited states.
Starting Page	3514
Ending Page	3522
Page Count	9
File Format	HTM / HTML PDF
ISSN	20507488
Volume Number	5
Issue Number	7
Journal	Journal of Materials Chemistry A
DOI	10.1039/c6ta10506h
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	DSC Molecular engineering Dye Dye-sensitized solar cell Electron acceptor Acid Solar cell Electron donor Carrier generation and recombination Fluorescence
Content Type	Text
Resource Type	Article
Subject	Chemistry Renewable Energy, Sustainability and the Environment Materials Science

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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

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

High-efficiency metal-free organic-dye-sensitized solar cells with hierarchical ZnO photoelectrode

Thieno[2,3,a]carbazole donor-based organic dyes for high efficiency dye-sensitized solar cells

Diketopyrrolopyrrole-Based Donor-Acceptor Copolymers as Organic Sensitizers for Dye Sensitized Solar Cells

A structurally simple perylene dye with ethynylbenzothiadiazole-benzoic acid as the electron acceptor achieves an over 10% power conversion efficiency

Y-shaped metal-free D–π–(A)₂ sensitizers for high-performance dye-sensitized solar cells

High-efficiency dye-sensitized solar cell with a novel co-adsorbent

Origin of efficiency enhancement in Nb₂O₅ coated titanium dioxide nanorod based dye sensitized solar cells

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

Similar Documents

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

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

High-efficiency metal-free organic-dye-sensitized solar cells with hierarchical ZnO photoelectrode

Thieno[2,3,a]carbazole donor-based organic dyes for high efficiency dye-sensitized solar cells

Diketopyrrolopyrrole-Based Donor-Acceptor Copolymers as Organic Sensitizers for Dye Sensitized Solar Cells

A structurally simple perylene dye with ethynylbenzothiadiazole-benzoic acid as the electron acceptor achieves an over 10% power conversion efficiency

Y-shaped metal-free D–π–(A)2 sensitizers for high-performance dye-sensitized solar cells

High-efficiency dye-sensitized solar cell with a novel co-adsorbent

Origin of efficiency enhancement in Nb2O5 coated titanium dioxide nanorod based dye sensitized solar cells

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

Y-shaped metal-free D–π–(A)₂ sensitizers for high-performance dye-sensitized solar cells

Origin of efficiency enhancement in Nb₂O₅ coated titanium dioxide nanorod based dye sensitized solar cells