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Rational Design of Dipolar Chromophore as an Efficient Dopant-Free Hole-Transporting Material for Perovskite Solar Cells
Open accessAbstract
In this paper, an electron donor-acceptor (D-A) substituted dipolar chromophore (BTPA-TCNE) is developed to serve as an efficient dopant-free hole-transporting material (HTM) for perovskite solar cells (PVSCs). BTPA-TCNE is synthesized via a simple reaction between a triphenylamine-based Michler's base and tetracyanoethylene. This chromophore possesses a zwitterionic resonance structure in the ground state, as evidenced by X-ray crystallography and transient absorption spectroscopies. Moreover, BTPA-TCNE shows an antiparallel molecular packing (i.e., centrosymmetric dimers) in its crystalline state, which cancels out its overall molecular dipole moment to facilitate charge transport. As a result, BTPA-TCNE can be employed as an effective dopant-free HTM to realize an efficient (PCE ≈ 17.0%) PVSC in the conventional n-i-p configuration, outperforming the control device with doped spiro-OMeTAD HTM.
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Price, M. B., Butkus, J., Jellicoe, T. C., Sadhanala, A., Briane, A., Halpert, J. E., Broch, K., Hodgkiss, J. M., Friend, R. H., & Deschler, F. (2015) · Nature Communications · doi:10.1038/ncomms9420 · Cited by 704
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Recent advances in perovskite solar cells: efficiency, stability and lead-free perovskite
Yang, S., Fu, W., Zhang, Z., Chen, H., & Li, C.-Z. (2017) · Journal of Materials Chemistry A · doi:10.1039/c7ta00366h · Cited by 486
Recent Progress on the Long‐Term Stability of Perovskite Solar Cells
Fu, Q., Tang, X., Huang, B., Hu, T., Tan, L., Chen, L., & Chen, Y. (2018) · Advanced Science · doi:10.1002/advs.201700387 · Cited by 454
Hawash, Z., Ono, L. K., & Qi, Y. (2018) · Advanced Materials Interfaces · doi:10.1002/admi.201700623 · Cited by 455
Rajagopal, A., Yao, K., & Jen, A. K. ‐. (2018) · Advanced Materials · doi:10.1002/adma.201800455 · Cited by 429
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Metadata
- Authors
- Li, Z., Zhu, Z., Chueh, C.-C., Jo, S. B., Luo, J., Jang, S.-H., & Jen, A. K.-Y.
- Venue
- Journal of the American Chemical Society
- Publisher
- American Chemical Society (ACS)
- Published
- 2016-08-31
- Volume
- 138
- Issue
- 36
- Pages
- 11833-11839
- ISSN
- 0002-7863 (ISSN-L)
- 1520-5126
- OpenAlex
- W2509023492
- Cited by
- 209
- References
- 1
- FWCI
- 14.64
- Type
- journal article
- Language
- en
- Open access
- green
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