Fused selenophene-thieno[3,2-b]thiophene-selenophene (ST)-based narrow-bandgap electron acceptor for efficient organic solar cells with small voltage loss
Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review
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Detail(s)
Original language | English |
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Pages (from-to) | 8258-8261 |
Journal / Publication | Chemical Communications |
Volume | 55 |
Issue number | 57 |
Online published | 12 Jun 2019 |
Publication status | Published - 21 Jul 2019 |
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Abstract
A novel near-infrared-light-absorbing fused-ring electron acceptor, STIC, was developed for organic solar cells. STIC exhibited a narrow bandgap with an absorption edge reaching 940 nm, which was ascribed to the strong electron-rich selenophene-thieno[3,2-b]thiophene-selenophene (ST) unit and strong intramolecular charge transfer of STIC. Also, STIC-based devices showed low open-circuit voltage (Voc) loss values, attributed to the rigid ST core providing low reorganization energy. The device based on the PBDB-T:STIC blend exhibited a power conversion efficiency (PCE) of 9.68% with a high short-circuit current density (Jsc) of 19.96 mA cm-2 and a low Voc loss of 0.55 eV.
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Fused selenophene-thieno[3,2-b]thiophene-selenophene (ST)-based narrow-bandgap electron acceptor for efficient organic solar cells with small voltage loss. / Liao, Xunfan; Shi, Xueliang; Zhang, Ming et al.
In: Chemical Communications, Vol. 55, No. 57, 21.07.2019, p. 8258-8261.
In: Chemical Communications, Vol. 55, No. 57, 21.07.2019, p. 8258-8261.
Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review