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Author

Kim, Jin Young
Next Generation Energy Laboratory
Research Interests
  • Polymer solar cells, QD solar cells, organic-inorganic hybrid solar cells, perovskite solar cells, OLEDs, PeLEDs, organic FETs

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Pyrrolo[3,2-b]pyrrole based small molecules as donor materials for OPVs

Cited 4 times inthomson ciCited 3 times inthomson ci
Title
Pyrrolo[3,2-b]pyrrole based small molecules as donor materials for OPVs
Author
Song, SuheeKo, Seo-JinShin, HyunminJin, YoungeupKim, IlKim, Jin YoungSuh, Hongsuk
Keywords
Absorption onset; Donor materials; Electron donors; Electron-deficient units; Low band gap; Organic photovoltaic cell (OPVs); Power conversion efficiencies; Pyrrolo[3,2-b]pyrrole-2,5-dione; Regioisomers; Small molecules; Solid thin films; Suzuki polymerization; Synthetic pigments; Triphenyl amines
Issue Date
201305
Publisher
ELSEVIER SCIENCE BV
Citation
SOLAR ENERGY MATERIALS AND SOLAR CELLS, v.112, no., pp.120 - 126
Abstract
A new accepter unit, pyrrolo[3,2-b]pyrrole-2,5-dione, deserves much attention as the electron-deficient unit for the generation of electron donor material for organic photovoltaic cells (OPVs). Pyrrolo[3,2-b]pyrrole-2,5-dione unit, regioisomer of the known pyrrolo[3,4-c]pyrrole-1,4-dione, is originated from the structure of stable synthetic pigment. The organic low band gap molecules with pyrrolo[3,2-b]pyrrole-2,5-dione, thiophene and triphenyl amine units were synthesized using Suzuki polymerization to generate SM-B, SM-M and SM-H. The spectrum of SM-B as the solid thin film shows absorption band with maximum peaks at 356 and 517 nm, and the absorption onset at 667 nm, corresponding to band gap of 1.86 eV. The device comprising SM-B and PC71BM (1:4) showed a V-OC of 0.79 V. a J(SC) of 6.04 mA/cm(2), and a FF of 0.33, giving a power conversion efficiency of 1.56%.
URI
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DOI
http://dx.doi.org/10.1016/j.solmat.2013.01.004
ISSN
0927-0248
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