Spiro-1,3-dioxolanofullerenes with Low-lying LUMO Level for Organic Solar Cells

A series of spiro-1,3-dioxolanofullerenes with 6-, 7-, 8-, and 12-membered ring were synthesized by the acid-catalyzed reaction of fullerene epoxide with cycloalkanones. The LUMO levels of these fullerenes are 0.07–0.08 eV lower than that of PCBM, due to the electron-withdrawing ester directly bonde...

Full description

Saved in:
Bibliographic Details
Published in:Chemistry letters 2015-03, Vol.44 (3), p.282-284
Main Authors: Mikie, Tsubasa, Saeki, Akinori, Ikuma, Naohiko, Kokubo, Ken, Seki, Shu
Format: Article
Language:English
Subjects:
Buckminsterfullerene
Constraining
Energy conversion efficiency
Esters
Fullerenes
Photovoltaic cells
Solar cells
Solubility
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:A series of spiro-1,3-dioxolanofullerenes with 6-, 7-, 8-, and 12-membered ring were synthesized by the acid-catalyzed reaction of fullerene epoxide with cycloalkanones. The LUMO levels of these fullerenes are 0.07–0.08 eV lower than that of PCBM, due to the electron-withdrawing ester directly bonded to the C60 core. However, good power conversion efficiencies of 2.9 and 5.4% were obtained for the P3HT and PTB7 blend films, respectively. Characterization by solubility and morphology aided the understanding of the limiting factors behind the photovoltaic performance.
ISSN:0366-7022
1348-0715
DOI:10.1246/cl.141008