Poly(3-butylthiophene) nanowires inducing crystallization of poly(3-hexylthiophene) for enhanced photovoltaic performance

Lin, Zhongqin; Zhou, Weihua; Shi, Jiangman; Hu, Ting; Hu, Xiaotian; Zhang, Yong; Chen, Yiwang

doi:10.1039/c4tc02470b

Cited by 24 publications

(19 citation statements)

References 49 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Considering the incorporation of PTB7‐Th into PBDB‐T:FOIC blends can optimize the morphology of active layer by reducing the crystallinity of FOIC and decreasing the domain size of blend film; the contact angle measurement are employed to study the interaction and miscibility among different components . As shown in Figure and Table 2 , the surface free energy ( γ s ) calculated from the contact angles on water and diiodomethane are 44.1, 33.0, and 36.0 mN m −1 for FOIC, PBDB‐T, and PTB7‐Th, respectively.…”

Section: Photovoltaic Parameters Of Blade‐coated Ternary Oscs Under Amentioning

confidence: 99%

Achieving Balanced Crystallinity of Donor and Acceptor by Combining Blade‐Coating and Ternary Strategies in Organic Solar Cells

et al. 2018

Self Cite

View full text Add to dashboard Cite

As a prototype tool for slot‐die coating, blade‐coating exhibits excellent compatibility with large‐area roll‐to‐roll coating. A ternary organic solar cell based on PBDB‐T:PTB7‐Th:FOIC blends is fabricated by blade‐coating and exhibits a power conversion efficiency of 12.02%, which is one of the highest values for the printed organic solar cells in ambient environment. It is demonstrated that blade‐coating can enhance crystallization of these three materials, but the degree of induction is different (FOIC > PBDB‐T > PTB7‐Th). Thus, the blade‐coated PBDB‐T:FOIC device presents much higher electron mobility than hole mobility due to the very high crystallinity of FOIC. Upon the addition of PTB7‐Th into the blade‐coated PBDB‐T:FOIC blends, the crystallinity of FOIC decreases together with the corresponding electron mobility, due to the better miscibility between PTB7‐Th and FOIC. The ternary strategy not only maintains the well‐matched crystallinity and mobilities, but also increases the photocurrent with complementary light absorption as well as the Förster resonant energy transfer. Furthermore, small domains with homogeneously distributed nanofibers are observed in favor of the exciton dissociation and charge transport. This combination of blade‐coating and ternary strategies exhibits excellent synergistic effect in optimizing morphology, showing great potential in the large‐area fabrication of highly efficient organic solar cells.

show abstract

Section: Photovoltaic Parameters Of Blade‐coated Ternary Oscs Under Amentioning

confidence: 99%

Achieving Balanced Crystallinity of Donor and Acceptor by Combining Blade‐Coating and Ternary Strategies in Organic Solar Cells

et al. 2018

Self Cite

View full text Add to dashboard Cite

show abstract

“…The optoelectronic effects in semicrystalline conjugated polymers depend sensitively on chain order and the way crystalline domains are interconnected and oriented . 1D nanostructures such as nanowires, nanotubes, nanofibers, nanowire shish‐kebab (NWSK) structures, micro/nano conductive–dielectric channels, needle‐like lamellae, and sandwiched conductive–dielectric–conductive structures have attracted particular attentions due to their unique electronic and optical properties.…”

Section: Introductionmentioning

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

View full text Add to dashboard Cite

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.

show abstract

“…The addition of a third component can increase the crystallinity of the host donor or acceptor materials. Incorporation of a thieno[3,2‐b]thiophene‐ alt ‐pentathiophene copolymer (DHP 3 ), oligo(benzothiadiazole‐ alt ‐3,3′″‐dihexyl‐2,2′:5′,2″:5″,2′″‐quaterthiophene) (BT4T) or P3BT PNWs into a P3HT:PC 60 BM blend increases the P3HT crystallinity by nucleating P3HT crystallization. DHP 3 and BT4T induce P3HT crystallization and increase the charge mobility and light absorption of P3HT in the blend.…”

Section: Morphology Controlmentioning

confidence: 99%

Recent Advances in Morphology Optimization for Organic Photovoltaics

et al. 2018

View full text Add to dashboard Cite

Organic photovoltaics are an important part of a next-generation energy-harvesting technology that uses a practically infinite pollutant-free energy source. They have the advantages of light weight, solution processability, cheap materials, low production cost, and deformability. However, to date, the moderate photovoltaic efficiencies and poor stabilities of organic photovoltaics impede their use as replacements for inorganic photovoltaics. Recent developments in bulk-heterojunction organic photovoltaics mean that they have almost reached the lower efficiency limit for feasible commercialization. In this review article, the recent understanding of the ideal bulk-heterojunction morphology of the photoactive layer for efficient exciton dissociation and charge transport is described, and recent attempts as well as early-stage trials to realize this ideal morphology are discussed systematically from a morphological viewpoint. The various approaches to optimizing morphologies consisting of an interpenetrating bicontinuous network with appropriate domain sizes and mixed regions are categorized, and in each category, the recent trends in the morphology control on the multilength scale are highlighted and discussed in detail. This review article concludes by identifying the remaining challenges for the control of active layer morphologies and by providing perspectives toward real application and commercialization of organic photovoltaics.

show abstract

Poly(3-butylthiophene) nanowires inducing crystallization of poly(3-hexylthiophene) for enhanced photovoltaic performance

Abstract: P3BT nanowires induce the crystallization of P3HT and the aggregation of PC61BM molecules, facilitating charge transportation.

Cited by 24 publications

References 49 publications

Achieving Balanced Crystallinity of Donor and Acceptor by Combining Blade‐Coating and Ternary Strategies in Organic Solar Cells

Achieving Balanced Crystallinity of Donor and Acceptor by Combining Blade‐Coating and Ternary Strategies in Organic Solar Cells

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

Recent Advances in Morphology Optimization for Organic Photovoltaics

Contact Info

Product

Resources

About