Enhanced Performance of Bulk Heterojunction Solar Cells Using Block Copoly(3-alkylthiophene)s

Ren, Guoqiang; Wu, Pei-Tzu; Jenekhe, Samson A.

doi:10.1021/cm903783w

Cited by 99 publications

(90 citation statements)

References 43 publications

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“…79 As such devices made from poly(3-octylthiophene) (P3OT) have very low PCE of only 0.68%, in spite of chemical and band gap similarities to P3HT. 80,81 Blends and copolymers of P3HT (2b) and P3OT, as well as pure poly(3-heptylthiophene) (P3HpT), were investigated to optimize between the high charge mobility of P3HT (2b) and the extensibility of P3OT. P3HpT produced the best balance, ultimately maintaining the high crystallinity of P3HT (2b), while having a T g lower than room temperature.…”

Section: Effect Of Alkyl Side Chainsmentioning

confidence: 99%

Structure and design of polymers for durable, stretchable organic electronics

Onorato

Pakhnyuk

Luscombe

2016

Polym J

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The field of stretchable electronics has recently gained significant interest from the academic community, with a focus on producing materials that demonstrate reliable electrical performance with improved response to mechanical deformation. This review highlights the recent progress in understanding the relationships between the mechanical behavior and electrical performance of such devices. Potential solutions can take the form of intrinsically elastic polymers, polymer semiconductor/ elastomer blends and alternative engineering-oriented approaches, which are discussed herein. Trends and design strategies are beginning to manifest in this early stage of the stretchable electronics field. The development of stretchable electrical systems can provide unique applications of organic electronics.

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Section: Effect Of Alkyl Side Chainsmentioning

confidence: 99%

Structure and design of polymers for durable, stretchable organic electronics

Onorato

Pakhnyuk

Luscombe

2016

Polym J

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“…In order to investigate the effect of crystallinity of P3AT -based polymers, Jenekhe et al . synthesized copolymers of butylthiophene and octylthiophene, and showed that some polymers could form lamellar crystals [15,28] . Thus, an improved hole mobility and a best PCE of 3% was achieved from b2 .…”

Section: Polythiophene Derivativesmentioning

confidence: 99%

Polymer Solar Cells

Bai

Shi

Zhan

2013

Organic Optoelectronics

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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.

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“…A power conversion efficiency (PCE) of 0.22 % with open circuit voltage (V oc ) = 0.55 V, short due to the potential self-assembly of the block copolymers into well-defined microphase separations (Scherf et al 2008;Wang and Higashihara 2013;Yassar et al 2013). For instance, all-conjugated rod-rod block copolymers, such as poly(3-hexylthiophene)-b-poly(3-dodecylthiophene) (P3HT-b-P3DT) (Iovu et al 2005), P3HT-b-poly(3-phenoxy methylthiophene) (Ohshimizu and Ueda 2008), and poly(3-butylthiophene)-b-(poly(3-octylthiophene) (Ren et al 2010), were synthesized via the sequential monomer addition method through quasi-living KCTP. However, these all-conjugated block copolymers are all electron donors and cannot be used as single active components in BHJ solar cells due to the absence of electron acceptor.…”

Section: Introductionmentioning

confidence: 99%