Correlation Between Crystallinity and Solar‐Cell Efficiency of the Low‐Bandgap Polymer PDDTP | Zendy

Renz Joachim A. | Zendy; Ashraf Raja Shahid | Zendy; Erb Tobias | Zendy; Shokhovets Sviatoslav | Zendy; Gobsch Gerhard | Zendy; Klemm Elisabeth | Zendy; Hoppe Harald | Zendy

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Correlation Between Crystallinity and Solar‐Cell Efficiency of the Low‐Bandgap Polymer PDDTP

Author(s) -

Renz Joachim A.,

Ashraf Raja Shahid,

Erb Tobias,

Shokhovets Sviatoslav,

Gobsch Gerhard,

Klemm Elisabeth,

Hoppe Harald

Publication year - 2010

Publication title -

macromolecular chemistry and physics

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.57

H-Index - 112

eISSN - 1521-3935

pISSN - 1022-1352

DOI - 10.1002/macp.201000066

Subject(s) - crystallinity , polymer , materials science , annealing (glass) , crystallization , polymer solar cell , crystallization of polymers , band gap , energy conversion efficiency , chemical engineering , solar cell , fullerene , polymer chemistry , optoelectronics , composite material , chemistry , organic chemistry , engineering

Polymer/fullerene bulk heterojunction solar cells consisting of PDDTP:PCBM blends have been investigated and optimized. The structural properties of the photoactive layers were studied by GID‐XRD, which revealed a pronounced response of photovoltaic parameters on the polymer crystallinity. In addition to P3HT, another donor polymer was found that develops crystalline domains upon annealing. We found a clear correlation between annealing time, power conversion efficiency, and polymer crystallinity. The PDDTP crystallization ability is a promising property. This is a first step toward the synthesis of low‐bandgap polymers, which likewise show the ability to form crystalline domains and may therefore lead to a substantial increase in efficiency.

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