Thieno[2,3-a]carbazole-based donor-π-acceptor organic dyes for efficient dye-sensitized solar cells

Jian Zhao; Tienan Jin; Ashraful Islam; Eunsang Kwon; Md Akhtaruzzaman; Naoki Asao; Liyuan Han; Khalid A. Alamry; Samia A. Kosa; Abdullah Mohamed Asiri; Yoshinori Yamamoto

doi:10.1016/j.tet.2014.01.001

Thieno[2,3-a]carbazole-based donor-π-acceptor organic dyes for efficient dye-sensitized solar cells

Jian Zhao, Tienan Jin, Ashraful Islam, Eunsang Kwon, Md Akhtaruzzaman, Naoki Asao, Liyuan Han, Khalid A. Alamry, Samia A. Kosa, Abdullah Mohamed Asiri, Yoshinori Yamamoto

SCI - Research and Analytical Center for Giant Molecules

Research output: Contribution to journal › Article

18 Citations (Scopus)

Abstract

New donor-π-acceptor organic dyes K-1 and K-2 containing thieno[2,3-a]carbazole as an electron donor were designed and synthesized for dye-sensitized solar cells (DSCs). Photophysical and electrochemical properties of K-dyes were investigated. DSCs based on K-dyes showed a high conversion efficiency of 6.6-6.7% with a J_scof 12.40-12.49 mA cm^-2and a V_ocof 0.70-0.71 V. The molecular geometry calculation indicated that the existence of thienocarbazole donor in K-dyes enhanced the molecular planarity compared to the carbazole analogue dye MK-3. As a result, DSCs based on K-dyes showed high IPCEs, perhaps due to efficient intramolecular charge transfer and electron injection from excited dye to TiO₂conduction band.

Original language	English
Pages (from-to)	6211-6216
Number of pages	6
Journal	Tetrahedron
Volume	70
Issue number	36
DOIs	https://doi.org/10.1016/j.tet.2014.01.001
Publication status	Published - 2014

Keywords

Charge transfer
Donor-π-acceptor dye
Dye-sensitized solar cell
Molecular planarity
Thieno[2 3-A]carbazole

ASJC Scopus subject areas

Biochemistry
Drug Discovery
Organic Chemistry

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Zhao, J., Jin, T., Islam, A., Kwon, E., Akhtaruzzaman, M., Asao, N., Han, L., Alamry, K. A., Kosa, S. A., Asiri, A. M., & Yamamoto, Y. (2014). Thieno[2,3-a]carbazole-based donor-π-acceptor organic dyes for efficient dye-sensitized solar cells. Tetrahedron, 70(36), 6211-6216. https://doi.org/10.1016/j.tet.2014.01.001

Thieno[2,3-a]carbazole-based donor-π-acceptor organic dyes for efficient dye-sensitized solar cells. / Zhao, Jian; Jin, Tienan; Islam, Ashraful; Kwon, Eunsang; Akhtaruzzaman, Md; Asao, Naoki; Han, Liyuan; Alamry, Khalid A.; Kosa, Samia A.; Asiri, Abdullah Mohamed; Yamamoto, Yoshinori.

In: Tetrahedron, Vol. 70, No. 36, 2014, p. 6211-6216.

Research output: Contribution to journal › Article

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title = "Thieno[2,3-a]carbazole-based donor-π-acceptor organic dyes for efficient dye-sensitized solar cells",

abstract = "New donor-π-acceptor organic dyes K-1 and K-2 containing thieno[2,3-a]carbazole as an electron donor were designed and synthesized for dye-sensitized solar cells (DSCs). Photophysical and electrochemical properties of K-dyes were investigated. DSCs based on K-dyes showed a high conversion efficiency of 6.6-6.7% with a Jscof 12.40-12.49 mA cm-2and a Vocof 0.70-0.71 V. The molecular geometry calculation indicated that the existence of thienocarbazole donor in K-dyes enhanced the molecular planarity compared to the carbazole analogue dye MK-3. As a result, DSCs based on K-dyes showed high IPCEs, perhaps due to efficient intramolecular charge transfer and electron injection from excited dye to TiO2conduction band.",

keywords = "Charge transfer, Donor-π-acceptor dye, Dye-sensitized solar cell, Molecular planarity, Thieno[2 3-A]carbazole",

author = "Jian Zhao and Tienan Jin and Ashraful Islam and Eunsang Kwon and Md Akhtaruzzaman and Naoki Asao and Liyuan Han and Alamry, {Khalid A.} and Kosa, {Samia A.} and Asiri, {Abdullah Mohamed} and Yoshinori Yamamoto",

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AU - Asao, Naoki

AU - Han, Liyuan

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AB - New donor-π-acceptor organic dyes K-1 and K-2 containing thieno[2,3-a]carbazole as an electron donor were designed and synthesized for dye-sensitized solar cells (DSCs). Photophysical and electrochemical properties of K-dyes were investigated. DSCs based on K-dyes showed a high conversion efficiency of 6.6-6.7% with a Jscof 12.40-12.49 mA cm-2and a Vocof 0.70-0.71 V. The molecular geometry calculation indicated that the existence of thienocarbazole donor in K-dyes enhanced the molecular planarity compared to the carbazole analogue dye MK-3. As a result, DSCs based on K-dyes showed high IPCEs, perhaps due to efficient intramolecular charge transfer and electron injection from excited dye to TiO2conduction band.

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