Organic nanomaterials for efficient bulk heterojunction solar cells

Troshin, Pavel A.; Sariçiftçi, Niyazi Serdar

doi:10.1002/9781118354377.ch25

Cited by 6 publications

(7 citation statements)

References 126 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The nonfunctionalized TBTBT core unit 2 has been synthesized starting from 4,7-dibromobenzo[c] [1,2,5]thiadiazole which was introduced in Stille cross-coupling reaction with tributyl(thiophene2-yl)stannane which afforded 1 in reasonable yields. The nonfunctionalized TBTBT core unit 2 has been synthesized starting from 4,7-dibromobenzo[c] [1,2,5]thiadiazole which was introduced in Stille cross-coupling reaction with tributyl(thiophene2-yl)stannane which afforded 1 in reasonable yields.…”

Section: Resultsmentioning

confidence: 99%

“…The 4-bromo-7-(thiophen-2-yl)benzo[c] [1,2,5]thiadiazole 1 was treated with 2,5-bis(tributylstannyl)thiophene under the Stille reaction conditions which provided the target compound 2 (Scheme 1). Compound 2 demonstrated low solubility in organic solvents.…”

Section: Figure 1 Molecular Structures Of Polymers P1-p5mentioning

confidence: 99%

“…The syntheses of monomers M4 and M5 started from the Stille cross-coupling reactions of 4,7dibromobenzo[c] [1,2,5]thiadiazole with stannanes derived from corresponding alkylthiophenes. Bromination of 4 and 5 in 1,2-DCB at room temperature yielded target monomers M1 and M2, respectively.…”

Section: Figure 1 Molecular Structures Of Polymers P1-p5mentioning

confidence: 99%

“…1 Various combinations of electron deficient units (quinoxaline, benzothiadiazole, benzooxadiazole, benzotriazole, 1,4-diketopyrrolopyrrole, thieno[3,4-c]pyrrole-4,6-dione, and isoindigo) with strong thiophene-based electron donors (substituted thiophenes, cyclopentadithiophene, dithienobenzene, dithienopyrrole, dithienosilole, dithienogermole) and often also with additional building blocks bearing solubilizing alkyl side chains (carbazole, fluorene, silafluorene) resulted in hundreds of novel polymer structures. 5 One of the reasons is a very little attention paid by researchers to the impact of solubilizing alkyl side chains on the optoelectronic properties of conjugated polymers. 3 Remarkable progress in the chemistry and physics of conjugated polymers led to development of theoretical approaches allowing one to predict properties of target materials considering electronic structure of individual building blocks.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

A strong influence of the positions of solubilizing alkyl side chains on optoelectronic and photovoltaic properties of TTBTBTT-based conjugated polymers

et al. 2015

View full text Add to dashboard Cite

We report the synthesis and comparative study of five conjugated polymers P1-P5 with different arrangements of two solubilizing 2-ethlyhexyl side chains in their repeating units. It has been shown that positioning of the alkyl substituents affects strongly frontier energy levels of the polymers and results in variation of their optical band gaps between 1.65 and 2.0 eV. The highest (2.8×10 -4 cm 2. V -1. s -1 ) and the lowest (2.4×10 -5 cm 2. V -1. s -1 ) charge carrier mobilities determined for the polymers P1 and P5, respectively, using SCLC technique differ by more than one order of magnitude. GIWAXS measurements also revealed very different degrees of molecular ordering in the films of polymers P1-P5 which correlate well with the SCLC mobility data and solid state photoluminescence spectra of these materials. The bulk heterojunction solar cells based on the composites of polymers P1-P5 with [60]PCBM demonstrated power conversion efficiencies ranging from 0.6% (P5) to 5.1% (P1) thus evidencing strong influence of the alkyl side chains on the photovoltaic performance of the designed polymer-based materials. This journal is Electronic Supplementary Information (ESI) available: Optical absorption spectra for thin films, cyclic voltammograms, J 1/2 -V plots for hole-only This journal is ARTICLE Journal Name devices, 2D GIWAXS patterns for thin films of P1-P5, AFM images for composites of P1-P5 with [60]PCBM. See

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Figure 1 Molecular Structures Of Polymers P1-p5mentioning

confidence: 99%

Section: Figure 1 Molecular Structures Of Polymers P1-p5mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

A strong influence of the positions of solubilizing alkyl side chains on optoelectronic and photovoltaic properties of TTBTBTT-based conjugated polymers

et al. 2015

View full text Add to dashboard Cite

show abstract

“…7, the atomic force microscopy should not be considered as a universal method for investigation of the morphology of the fullerene/polymer organic solar cells [94]. AFM images give precise information just about the surface topography of the composite films.…”

Section: Fullerene Derivatives Formentioning

confidence: 99%

Research in the Field of Organic Photovoltaics at the Institute for Problems of Chemical Physics of Russian Academy of Sciences

Troshin

2015

Organic Photonics and Photovoltaics

Self Cite

View full text Add to dashboard Cite

In the present review we highlight the main research activities in the field of organic photonics and photovoltaics at the Institute for Problems of Chemical Physics of Russian Academy of Sciences (IPCP RAS). Extensive investigation of optical and electrical properties of π-conjugated organic compounds performed at IPCP RAS since 1960's resulted in design of many exciting materials representing organic semiconductors, metals and superconductors. Organic Schottky barrier and p/n junction photovoltaic devices constructed at IPCP RAS in 1960's and 1970's were among the first examples of reasonably efficient organic solar cells at that time. These early discoveries inspired younger generations of the researchers to continue the work of their mentors and explore the world of organic materials and photonic devices such as molecular photonic switches, organic light emitting diodes, solar cells, photodetectors, photoswitchable organic field-effect transistors and memory elements.

show abstract