Orthogonal self-assembly and selective solvent vapour annealing: simplified processing of a photovoltaic blend.

نویسندگان

  • Giovanna De Luca
  • Andrea Liscio
  • Glauco Battagliarin
  • Long Chen
  • Luigi Monsù Scolaro
  • Klaus Müllen
  • Paolo Samorì
  • Vincenzo Palermo
چکیده

Selective solvent vapour annealing is used on a photovoltaic blend to enhance the interaction between the electron acceptor and the electron donor, simplifying thin films post-processing for photovoltaic applications. A remarkable improvement in the interfacial charge transfer in the bulk hetero-junction is attained, as measured by Kelvin Probe Force Microscopy.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Understanding the morphology of solution processed fullerene-free small molecule bulk heterojunction blends.

Bulk-heterojunction (BHJ) molecular blends prepared from small molecules based on diketopyrrolopyrrole (DPP) and perylene-diimide (PDI) chromophores have been studied using optical absorption, cyclic voltammetry, photoluminescence quenching, X-ray diffraction, atomic force microscopy, and current-voltage measurements. The results provided useful insights into the use of DPP and PDI based molecu...

متن کامل

Kinetically controlled nanostructure formation in self-assembled globular protein-polymer diblock copolymers.

Aqueous processing of globular protein-polymer diblock copolymers into solid-state materials and subsequent solvent annealing enables kinetic and thermodynamic control of nanostructure formation to produce block copolymer morphologies that maintain a high degree of protein fold and function. When model diblock copolymers composed of mCherry-b-poly(N-isopropylacrylamide) are used, orthogonal con...

متن کامل

Controlled evaporative self-assembly of hierarchically structured bottlebrush block copolymer with nanochannels†

The toluene solution of a bottlebrush block copolymer, polystyrene–polylactide (PS–PLA), was confined in a cylinder-on-flat geometry, from which the consecutive ‘‘stick-slip’’ motion of the threephase contact line of the PS–PLA solution was effectively regulated as toluene evaporated, thereby yielding gradient stripes at the microscopic scale. Subsequent selective solvent vapor annealing led to...

متن کامل

Sequential Processing for Organic Photovoltaics: Design Rules for Morphology Control by Tailored SemiOrthogonal Solvent Blends

obtaining such effi ciencies has proven to be a major challenge due to the high sensitivity of device performance on the nm-scale morphology of the polymer and fullerene components. [ 10–17 ] To achieve the ideal nm-scale bulk heterojunction (BHJ) morphology for photovoltaic applications, two solution-based processing methods can be used: blend casting (BC) [ 18,19 ] and sequential processing (...

متن کامل

Directed self-assembly of solvent-vapor-induced non-bulk block copolymer morphologies on nanopatterned substrates.

We report a study on directed self-assembly (DSA) with solvent annealing to induce the formation of non-bulk block copolymer microdomains on chemical patterns. Ultrathin films of symmetric polystyrene-block-poly(methyl methacrylate) (PS-b-PMMA) display morphologies of PMMA dots, stripes, and PS hexagons with increasing exposure time to acetone vapor, a PMMA-selective solvent. All three nanostru...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:
  • Chemical communications

دوره 49 39  شماره 

صفحات  -

تاریخ انتشار 2013