✦ LIBER ✦

Polythiophenes with Carbazole Side Chains: Design, Synthesis and Their Application in Organic Solar Cells

✍ Scribed by Weiwei Li; Yang Han; Yulan Chen; Cuihong Li; Bingsong Li; Zhishan Bo

Publisher: John Wiley and Sons
Year: 2010
Tongue: English
Weight: 431 KB
Volume: 211
Category: Article
ISSN: 1022-1352
DOI: 10.1002/macp.200900641

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

A series of polythiophene derivatives P1‐P5 containing carbazole side chains were designed and synthesized via the Stille polymerization. All carbazole containing polymers showed broad absorption in the visible region. The power conversion efficiencies of solar cells based on blends of two component copolymers and [6,6]‐phenyl‐C~61~‐butyric acid methyl ester (PC~61~BM) were determined to be 0.29 and 0.56% for P1 and P5, respectively. For solar cells fabricated with the three component copolymers and PC~61~BM, the efficiencies were 0.56% for P2, 0.86% for P3, and 0.70% for P4. The introduction of electron‐donating carbazole side chains can broaden the absorption in the visible region and meanwhile reduce phase separation due to the steric hinderance of the carbazole moiety to the conjugated main chain. Improving efficiency needs a balance of broad absorption and ordered packing of polymer chains in the solid state.

magnified image

📜 SIMILAR VOLUMES

Synthesis of a soluble polythiophene cop

Synthesis of a soluble polythiophene copolymer with thiophene–vinylene conjugated side chain and its applications in photovoltaic devices

✍ Bo Qu; Zhongliang Jiang; Zhijian Chen; Lixin Xiao; Di Tian; Chao Gao; Wei Wei; Q 📂 Article 📅 2011 🏛 John Wiley and Sons 🌐 English ⚖ 695 KB

Synthesis of Dopamines Labelled with13C

Synthesis of Dopamines Labelled with13C in the α- or β-Side Chain Position and Their Application to Structural Studies on Melanins by Solid-State NMR Spectroscopy

✍ Crescenzi, Orlando ;Kroesche, Christoph ;Hoffbauer, Wilfried ;Jansen, Martin ;Na 📂 Article 📅 1994 🏛 John Wiley and Sons 🌐 English ⚖ 530 KB

## Abstract Solid‐state NMR spectroscopy was applied to the analysis of melanins prepared by peroxidase‐H~2~O~2~ oxidation of dopamines specifically ^13^C labelled in the α‐ or β‐side chain positions. A surprisingly diverse pattern of signals indicated the presence of uncyclized dopamine and noradr