Synthesis and Characterization of a Novel Naphthodithiophene-Based Copolymer for Use in Polymer Solar Cells

Sanjaykumar, S. R.; Badgujar, Sachin; Song, Chang Eun; Shin, Won Suk; Moon, Sang‐Jin; Kang, In‐Nam; Lee, Jaemin; Cho, Shinuk; Lee, Sang Kyu; Lee, Jong‐Cheol

doi:10.1021/ma301312d

Cited by 51 publications

(28 citation statements)

References 36 publications

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“…The decrease in the nanonetwork channel improves the charge separation in the active layer while reducing the exciton diffusion length and the charge recombination, leading to a high photocurrent. 45 …”

Section: Photovoltaic Propertiesmentioning

confidence: 99%

Improvement of short circuit current density by intermolecular interaction between polymer backbones for polymer solar cells

Lee

Choi

Jeon

et al. 2016

Polym J

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Benzodithiophene-and quinoxaline (Qu)-based derivatives were used to obtain two kinds of D-π-A-type polymers, poly(diethylhexyloxy benzo dithiophene-dioctyloxy dithiophene diphenyl Qu) (PBDTAQ) and poly(diethylhexyloxy benzo dithiophene-dioctyloxy dithiophene dibenzophenazine (PBDTAFQ), through a Stille coupling reaction. Phenyl (Qu) and fused-phenyl (phenazine, Pz) were introduced in locations 2 and 3, respectively, of Qu derivatives. For the polymer introduced with Pz, the tilt angle (θ 3 ) between the 2,3-carbon and the bonded phenyl side chains of Qu decreased from 44.06°to 0°. As a result, PBDTAFQ displayed a higher absorbance compared with PBDTAQ at the UV-vis absorption spectra in the film state. Also, the intra/intermolecular charge transfer (ICT) peak intensity of 500-700 nm increased relative to the solution peak. Furthermore, the results of the X-ray diffraction measurement suggest that the d π -spacing distance for PBDTAFQ (d π = 3.89 Å) was smaller than that for PBDTAQ (d π = 4.36Å), exhibiting a stronger intermolecular interaction. PBDTAQ showed an edge-on dominant orientation, whereas the PBDTAFQ thin films showed an increase in the face-on structure for crystallinity. As a consequence, PBDTAFQ showed an improved short current density (J SC ) in organic photovoltaic cells. The PBDTAFQ:PC 70 BM blend-based devices that were fabricated exhibited a power conversion efficiency of 3.0% at a 1:5 ratio and reached 3.4% when treated with additive and methanol.

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Section: Photovoltaic Propertiesmentioning

confidence: 99%

Improvement of short circuit current density by intermolecular interaction between polymer backbones for polymer solar cells

Lee

Choi

Jeon

et al. 2016

Polym J

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“…A copolymer of naphtho[2,3-b:6,7-d 0 ] dithiophene (NDT) with thieno [3,4-c]pyrrole-4,6-dione unit as the acceptor, (P103), was prepared by Lee et al and compared the P104 with BDT analogue. The prepared copolymer P103 has a better coplanarity compared to P104, with efficient p-stacking and hence resulted in increased efficiency compared to BDT analogue [104].…”

Section: Naphthodithiophene Based Polymersmentioning

confidence: 99%

Polymer design for solar cell – Current trend and future scenario

Hemavathi

Ahipa

Pai

2015

European Polymer Journal

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“…The first NDT‐based semiconducting polymers with the D–A architecture, P1 , consisting of 5,10‐dialkyloxy NDT1 and thieno[3,4‐ c ]pyrrole‐1,4‐dione (TPD) units, and P4 and P5 , consisting of the NDT3 unit and BTz and naphtho[1,2‐ b :5,6‐ c ′]bis[1,2,5]thiadiazole (NTz) units, respectively, were reported in 2012 (Figure ). These three polymers showed promising performance as p‐type semiconductors both in OPV and OFET devices.…”

Section: Application Of Ndt Units To Organic Semiconductors: From Smamentioning

confidence: 99%

Naphthodithiophenes: Emerging Building Blocks for Organic Electronics

Takimiya

Osaka

2014

The Chemical Record

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Linear-fused naphthodithiophenes (NDTs) are emerging building blocks in the development of new semiconducting small molecules, oligomers, and polymers. The promising nature of NDT-based materials as organic semiconductors has been demonstrated by superior device characteristics in organic field-effect transistors (OFETs) and organic photovoltaics (OPVs) in the last few years. In particular, it is quite impressive that a power conversion efficiency as high as 8.2% has been achieved for a single-junction OPV cell consisting of NDT-based semiconducting polymers and a fullerene derivative in such a short period of time. Here, we provide an overview of recent synthetic evolutions in NDT chemistry and progress in NDT-based materials, especially conjugated oligomers and polymers and their applications to OFETs and OPVs.

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Synthesis and Characterization of a Novel Naphthodithiophene-Based Copolymer for Use in Polymer Solar Cells

Cited by 51 publications

References 36 publications

Improvement of short circuit current density by intermolecular interaction between polymer backbones for polymer solar cells

Improvement of short circuit current density by intermolecular interaction between polymer backbones for polymer solar cells

Polymer design for solar cell – Current trend and future scenario

Naphthodithiophenes: Emerging Building Blocks for Organic Electronics

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