Fine dispersion and self-assembly of ZnO nanoparticles driven by P3HT-b-PEO diblocks for improvement of hybrid solar cells performance

“…Highly regioregular P3HTs (˃99%) with the molecular weights ( M n P3HT ) of 7150, 21 000, and 48 800 g mol −1 and the polydispersity index (PDI) ranged in 1.21–1.25 were synthesized using Grignard metathesis polymerization . The P3HT‐ b ‐PEG 750 , P3HT‐ b ‐PMMA 497 , and P3HT‐ b ‐PS 519 rod‐coil block copolymers with PDI of 1.28–1.35 were synthesized with Suzuki coupling and atom transfer radical polymerization (ATRP) . The written index after the second block (coily oligomer) stood for the molecular weight.…”

Section: Methodsmentioning

confidence: 99%

High‐Quality Nano/Micro Hairy Single Crystals Developed from Poly(3‐hexylthiophene)‐Based Conductive–Dielectric Block Copolymers Having Flat‐on and Edge‐on Orientations

Zenoozi

Agbolaghi

Gheybi

et al. 2017

Macro Chemistry & Physics

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Highly uniform and conductive single crystals of poly(3‐hexylthiophene) (P3HT)‐based homo and block copolymers with the end coily blocks of polystyrene, poly(methyl methacrylate), and poly(ethylene glycol) are developed using self‐seeding method from varied quality solvents. Edge‐on and flat‐on orientations are detected depending on the thickness and width of single crystals. Coily blocks are excluded from the P3HT crystalline structures, leading to brush‐like or hairy regions on surface of grown single crystals in the longitude of P3HT chains. The larger single crystals possessing flat‐on orientation are obtained from weaker solvents at higher seeding temperatures. The longer P3HT chains are folded, however, the shorter backbones are laminated on each other. The highest backbone lamination occurs for homo‐P3HT7150 (Mn of P3HT = 7150 g mol−1) single crystals grown at 20 °C from anisole, the weakest employed solvent. In contract, highly ordered and folded hairy single crystals are acquired from better solvents and high molecular weight P3HTs. In these conditions, the crystallographic features of the hairy block copolymer single crystals are similar to those of nonhairy homo‐P3HT ones. The coily brush‐covered P3HT48 800 single crystals have more foldings compared to the homo‐P3HT48 800 ones, whereas only two laminated backbones in shorter P3HT blocks are detected.

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“…As a consequence, an improved power conversion efficiency of the hybrid solar cells together with an improvement in overall thermal stability of the hybrid solar cells was gained. [236] Nevertheless, most power conversion efficiencies for conducting block copolymer combined with TiO 2 or ZnO were not able to overcome the record values from related nanocomposite hybrid solar cells. As for the blend systems, higher efficiencies were reported for the combination of conjugated block copolymers with quantum dots.…”

Section: Wwwadvancedsciencenewscommentioning

confidence: 99%

“…[240] Li et al demonstrated that ZnO can be very well dispersed in a P3HT-b-PEG diblock copolymer matrix and fabricated BHJ hybrid solar cells. [236] Surface defects of ZnO, the major problem in hybrid solar cells based on ZnO, were passivated due to the interaction between the oxygen atoms of the PEO chains and the ZnO polar surface. As a consequence, an improved power conversion efficiency of the hybrid solar cells together with an improvement in overall thermal stability of the hybrid solar cells was gained.…”

Section: Wwwadvancedsciencenewscommentioning

confidence: 99%

“…insulating blocks as for example PMMA (P3HT-b-PMMA), [224] or poly(2-vinylpyridine) (P3HT-b-P2VP, [225][226][227][228][229] or P4VP (P3HT-b-P4VP), [230][231][232] or PEO (P3HT-b-PEO), [233][234][235][236][237][238][239][240][241][242] or polylactides (P3HT-b-PLA), [243] or polyacrylic acids (P3HT-b-PAA). [244,245] Also more special block copolymer with P3HT block were reported as for example azobenzene liquid crystalline mesogen, 6-(4-((4-methoxyphenyl)diazenyl)phenoxy)hexyl methacrylate (MMAZO) incorporated into a block copolymer with P3HT.…”

Section: Wwwadvancedsciencenewscommentioning

confidence: 99%

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Hybrid Photovoltaics – from Fundamentals towards Application

Müller‐Buschbaum

Thelakkat

Fässler

et al. 2017

Advanced Energy Materials

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In hybrid photovoltaics, an organic and an inorganic semiconductor are combined in the active layer, with the advantages of both material classes in a single device. The organic component contributes towards the possibility for wet chemical device preparation with potentially low costs in combination with achieving flexible devices. From the inorganic component an increase in stability, as well as superior opto‐electronic properties, is added. Given the large diversity of organic and inorganic semiconductors, a large number of possible realizations of hybrid solar cells emerge. In the present review, we limit to hybrid solar cells which combine conjugated polymers with inorganic materials such as titanium dioxide, zinc oxide, silicon, germanium and quantum dots to keep focused. Particular emphasis is put on different routes to tailor nanostructures, such as the use of semiconductor block copolymers. The inorganic component is either synthesized directly in one of the blocks or added as a pre‐synthesized nanomaterial to form the hybrid material. Alternatively, the block copolymer is used as a structure‐directing template in a sol–gel synthesis approach to have tailored inorganic nanostructures, which are back‐filled with the organic component to fabricate the hybrid material. Hybrid solar cells based on crystalline Si are discussed for comparison.

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Fine dispersion and self-assembly of ZnO nanoparticles driven by P3HT-b-PEO diblocks for improvement of hybrid solar cells performance

Cited by 30 publications

References 53 publications

Phytochemical Studies of Ficus deltoidea var kunstleri

Phytochemical Studies of Ficus deltoidea var kunstleri

High‐Quality Nano/Micro Hairy Single Crystals Developed from Poly(3‐hexylthiophene)‐Based Conductive–Dielectric Block Copolymers Having Flat‐on and Edge‐on Orientations

Hybrid Photovoltaics – from Fundamentals towards Application

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