NDLI: A wide band gap polymer based on indacenodithieno[3,2-b]thiophene for high-performance bulk heterojunction polymer solar cells

Please wait, while we are loading the content...

A wide band gap polymer based on indacenodithieno[3,2-b]thiophene for high-performance bulk heterojunction polymer solar cells

Content Provider	Semantic Scholar
Author	Lee, Woosung Jung, Jae Woong
Copyright Year	2017
Abstract	Although wide band gap polymers have attracted much interest for applications in polymer solar cells (PSCs) as short-wavelength light absorbers in tandem devices, the power conversion efficiencies (PCEs) of wide band gap polymer-based single cell devices are inferior to those of narrow-band gap polymers due to their restricted light absorption range. Thus, it is necessary to develop new semiconducting polymers for optimal device performance. Herein, a new wide band gap polymer (PIDTT-TT) was designed and synthesized by copolymerizing indacenodithieno[3,2-b]thiophene (IDTT) with thieno[3,2-b]thiophene (TT), resulting in a wide band gap polymer (PIDTT-TT) with an absorption onset at ∼580 nm (optical band gap = 2.14 eV). Electrochemical investigations indicated the low-lying energy levels (HOMO = −5.35 eV) of PIDTT-TT compared to those of P3HT (HOMO = 5.00 eV), which is beneficial for obtaining a high open-circuit voltage (VOC) in the device. The optimized morphology of the PIDTT-TT:PC71BM blend film led to a high VOC (0.96 V) and fill factor (FF) (0.66), which compensate for the limited light absorption range, achieving a power conversion efficiency (PCE) of 7.10%. Furthermore, the deep energy levels of PIDTT-TT reinforced the air stability of the solar cell, which retained 85% of its initial PCE after being stored for 120 h under ambient conditions. Accordingly, PIDTT-TT is a potential candidate for applications in tandem solar cells. This study enriched the design rules of wide band gap polymers for high-performance PSCs.
Starting Page	712
Ending Page	719
Page Count	8
File Format	PDF HTM / HTML
DOI	10.1039/C6TA08591A
Volume Number	5
Alternate Webpage(s)	http://www.rsc.org/suppdata/c6/ta/c6ta08591a/c6ta08591a1.pdf
Alternate Webpage(s)	https://doi.org/10.1039/C6TA08591A
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

Central Library (ISO-9001:2015 Certified)
Indian Institute of Technology Kharagpur
Kharagpur, West Bengal, India | PIN - 721302

See location in the Map
03222 282435
Mail: support@ndl.gov.in

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