Film morphology evolution during solvent vapor annealing of highly efficient small molecule donor/acceptor blends

文献情報

出版日 2016-09-15

DOI 10.1039/C6TA05056E

インパクトファクター 12.732

著者

Sebastian Engmann, Hyun Wook Ro, Andrew Herzing, Chad R. Snyder, Lee J. Richter, Paul B. Geraghty, David J. Jones

原文を見る

要旨

Solution-processable small molecule photovoltaics based on the novel molecular donor, benzodithiophene terthiophene rhodanine (BTR), recently have shown maximum power conversion efficiencies above 8% for active layer thicknesses up to 400 nm, using post process solvent vapor annealing (SVA) with tetrahydrofuran (THF). Here we report an in situ study on the morphology evolution during SVA using the moderate solvent THF and the good solvent chloroform (CF). The combination of real-time grazing incidence X-ray diffraction (GIXD) and grazing incidence small angle X-ray scattering (GISAXS) allows us to draw a complete picture of the evolution of crystallinity and phase purity during post process annealing. We find that the relative crystallinity compared to the as-cast films is only modestly affected by SVA and solvent choice. However, both the phase purity and the characteristic domain sizes within the film vary significantly and are controlled by the solvent quality as well as exposure time. Using THF, films with high phase purity and desirable characteristic length scales of about 30 nm can be achieved, while the use of CF rapidly leads to excessive film coarsening and less preferable domain sizes on the order of 60 nm, too large for optimized charge separation.

掲載誌

Journal of Materials Chemistry A

CiteScore: 19.5

自己引用率: 4.7%

年間論文数: 2211

Journal of Materials Chemistry A, B & C cover high quality studies across all fields of materials chemistry. The journals focus on those theoretical or experimental studies that report new understanding, applications, properties and synthesis of materials. The journals have a strong history of publishing quality reports of interest to interdisciplinary communities and providing an efficient and rigorous service through peer review and publication. The journals are led by an international team of Editors-in-Chief and Associate Editors who are all active researchers in their fields. Journal of Materials Chemistry A, B & C are separated by the intended application of the material studied. Broadly, applications in energy and sustainability are of interest to Journal of Materials Chemistry A, applications in biology and medicine are of interest to Journal of Materials Chemistry B, and applications in optical, magnetic and electronic devices are of interest to Journal of Materials Chemistry C. More than one Journal of Materials Chemistry journal may be suitable for certain fields and researchers are encouraged to submit their paper to the journal that they feel best fits for their particular article. Example topic areas within the scope of Journal of Materials Chemistry A are listed below. This list is neither exhaustive nor exclusive. Artificial photosynthesis Batteries Carbon dioxide conversion Catalysis Fuel cells Gas capture/separation/storage Green/sustainable materials Hydrogen generation Hydrogen storage Photocatalysis Photovoltaics Self-cleaning materials Self-healing materials Sensors Supercapacitors Thermoelectrics Water splitting Water treatment

Film morphology evolution during solvent vapor annealing of highly efficient small molecule donor/acceptor blends

文献情報

おすすめジャーナル

関連文献

Pd-Catalyzed coupling reaction of cyclobutanols with propargylic carbonates

Oxalamide-based bisdiamidophosphites: synthesis, coordination, and application in asymmetric metallocatalysis

Visible-light-mediated hydrodehalogenation and Br/D exchange of inactivated aryl and alkyl halides with a palladium complex

A pore-expanded supramolecular organic framework and its enrichment of photosensitizers and catalysts for visible-light-induced hydrogen production

Stereospecific acyloin ring contraction controlled by glucose and concise total synthesis of saffloneoside

Contents list

[Ag(bpy)(PPhtBu2)(OCF3)]: a stable nucleophilic reagent for chemoselective and stereospecific trifluoromethoxylation of secondary alkyl nosylates

Photoredox-catalyzed sulfonylation of alkenylcyclobutanols with the insertion of sulfur dioxide through semipinacol rearrangement

Endo/exo binding of alkyl and aryl diammonium ions by cyclopentanocucurbit[6]uril

Correction: Functionalisable acyclic cucurbiturils

こちらもおすすめ

6- bromo-1-cyclopropyl-1H-benzimidazoleの市場動向や研究トレンドはどうですか？

環氧プロpanol-d5を取り扱う際の実験室安全事項は何ですか？

2,2’-ジメチル-3,3’-ビピリジンはどのように合成されますか？

6-甲基ピリジン-2-ボリック酸の主な用途は何ですか？

（R）-3-(1-甲基-2-氧環己基)プロpano酸メチルは安全ですか？

ketorolacはどのように保存すればよいですか？

L-2,3-二氨基丙酸二盐酸盐を取り扱う際の実験室安全事項は何ですか？

2-(4-溴ピリジン-2-基)乙腈の物理化学的性質は何ですか？

3-フローロ-[1,1-ベンジレン]-3,4-ジカルボン酸を取り扱う際の実験室安全事項は何ですか？

3-(1-氧代-1,3-二氢-2H-2-异吲哚)丙酸の主な用途は何ですか？

掲載誌

Journal of Materials Chemistry A

おすすめ化合物

4-Hydroxy-3-(2-methyl-2-propanyl)benzonitrile

(2R,4R)-1-Boc-4-Aminopyrrolidine-2-carboxylic acid

5-Amino-6-chloro-2,3-dicyanopyrazine

(S)-3-((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)-2-phenylpropanoic acid

Benzyl 3-bromoazetidine-1-carboxylate

おすすめサプライヤー