Synthesis, Characterization, and Photovoltaic Properties of Novel Semiconducting Polymers with Thiophene−Phenylene−Thiophene (TPT) as Coplanar Units

Chan, Shu-Hua; Chen, Chih‐Ping; Chao, Teng‐Chih; Ting, Chou‐Chik; Lin, Chen-Cheng; Ko, Bao‐Tsan

doi:10.1021/ma800494k

Cited by 123 publications

(98 citation statements)

References 35 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In particular, power conversion efficiency (PCE) of 8–9% in a single junction device has been demonstrated 1–5. Among various materials developed for BHJ devices, the multifused‐ring conjugated polymers are particularly interesting due to their superior optical and electrical properties 6–20. The highly fused aromatic/heteroaromatic units enhance effective conjugation of the polymer backbone to facilitate electron delocalization.…”

Section: Methodsmentioning

confidence: 99%

Improved Charge Transport and Absorption Coefficient in Indacenodithieno[3,2‐b]thiophene‐based Ladder‐Type Polymer Leading to Highly Efficient Polymer Solar Cells

et al. 2012

View full text Add to dashboard Cite

A novel ladder-type donor (IDTT) is developed by substituting the two outward thiophenes of the IDT donor with two thieno[3,2-b]thiophenes. The polymer derived from this donor possesses longer effective conjugation and better planarity, which improves electron delocalization along the polymer backbone and charge mobility. The polymer solar cell device using PIDTT-DFBT shows a high power conversion efficiency of 7.03% with a large open-circuit voltage of 0.95 V without using any additives or post-solvent/thermal annealing processes.

show abstract

Section: Methodsmentioning

confidence: 99%

Improved Charge Transport and Absorption Coefficient in Indacenodithieno[3,2‐b]thiophene‐based Ladder‐Type Polymer Leading to Highly Efficient Polymer Solar Cells

et al. 2012

View full text Add to dashboard Cite

show abstract

“…synthesized a copolymer of pentacyclic fused thiophene -phenylenethiophene ( TPT ) unit with thiophene ( f7 ) [66] . This rigid planar structure facilitated an effective π -conjugation and strong intermolecular interactions.…”

Section: Polycyclopentadithiophene Derivativesmentioning

confidence: 99%

Polymer Solar Cells

Bai

Shi

Zhan

2013

Organic Optoelectronics

View full text Add to dashboard Cite

IntroductionThe photoactive layer of polymer solar cell s ( PSC s) is constituted of continuous and interpenetrating polymer donor and small -molecule or polymer acceptors. This structure is able to maximally increase the area of interface between the donor and acceptor, and thus improve the charge separation effi ciency. Conjugated polymers can be classifi ed as either electron donors ( p -type) or electron acceptors ( ntype), according to their differences in transporting holes or electrons in the cell. Among the semiconducting polymer materials, the p -type materials have attracted more attention, and are generally mixed with [6,6] -phenyl -C 61 or C 71 -butyric acid methyl ester ( PC 61 BM or PC 71 BM) to construct the photoactive layer of bulk heterojunction ( BHJ ) solar cells. Currently, the highest reported power conversion effi ciency ( PCE ) of polymer solar cells is 8.37% [1] . The n -type materials develop relatively slowly, and are frequently mixed with classic donor materials such as polyphenylenevinylene ( PPV ) derivatives, poly(3 -hexylthiophene) ( P3HT ), or other p -type materials, to construct all -polymer solar cells. To date, the highest PCE of these material is less than 3%.The basic requirements for an ideal donor or acceptor polymer material include: (i) good solubility and fi lm -forming properties; (ii) strong and broad bandwidth absorption; (iii) high hole or electron mobilities; (iv) suitable HOMO/LUMO energy levels; and (v) a high purity and molecular weight [2] . The aim of this chapter is to discuss the research and development of polymer solar cells fabricated from conjugated polymer donors and fullerene acceptors or conjugated polymer acceptors.

show abstract

“…With the availability of sp 3 -hybridized carbon atoms on the IDT, functional side chains can be easily attached onto the IDT unit to increase its solubility [22,23]. Moreover, the IDT monomer has been demonstrated as a high-performance building block in organic electronic materials, such as organic solar cells [24][25][26][27][28][29][30][31][32][33][34][35] and thin-film transistors [25,28,29,34,35]. However, it has yet been commonly applied in the field of electrochromic materials.…”

Section: Introductionmentioning

confidence: 99%

Red-to-black electrochromism of 4,9-dihydro-s-indaceno[1,2-b:5,6-b’]dithiophene-embedded conjugated polymers

Cho

Neo

et al. 2015

J Mater Sci

View full text Add to dashboard Cite

A series of 4,9-dihydro-s-indaceno[1,2-b:5,6-b 0 ]dithiophene-based conjugated polymers with 3,4-bis (dodecyloxy)thiophene, 3,3-bis((dodecyloxy)methyl)-3,4-dihydro-2H-thieno [3,4-b] [1, 4] dioxepine and 3,4-ethylenedioxythiophene as co-monomers were synthesized via Stille coupling reaction in more than 50 % yields. These polymers possess relatively high number-average molecular weights of 14,900-21,000 g mol -1 and exhibit good solubility in common organic solvents. The physical and electrochemical properties of these polymers were studied, and the polymers showed optical bandgap between 2.04 and 2.08 eV. Electrochromic devices showed a rare and reversible colour change between dark red at neutral state and black at oxidized state with optical switching contrast ratios of up to 50 % at k max and 90 % at 1500 nm in the visible and NIR regions, respectively.Graphical abstract 4,9-dihydro-s-indaceno[1,2-b:5,6-b']dithiophene-based conjugated polymers showing rare and reversible colour change between dark red at neutral state and black at oxidized state were synthesized via Stille coupling. These polymers possess high optical contrast in both the visible and NIR regions.Electronic supplementary material The online version of this article (

show abstract

Synthesis, Characterization, and Photovoltaic Properties of Novel Semiconducting Polymers with Thiophene−Phenylene−Thiophene (TPT) as Coplanar Units

Cited by 123 publications

References 35 publications

Improved Charge Transport and Absorption Coefficient in Indacenodithieno[3,2‐b]thiophene‐based Ladder‐Type Polymer Leading to Highly Efficient Polymer Solar Cells

Improved Charge Transport and Absorption Coefficient in Indacenodithieno[3,2‐b]thiophene‐based Ladder‐Type Polymer Leading to Highly Efficient Polymer Solar Cells

Polymer Solar Cells

Red-to-black electrochromism of 4,9-dihydro-s-indaceno[1,2-b:5,6-b’]dithiophene-embedded conjugated polymers

Contact Info

Product

Resources

About