Phosphonic Acid and Lithium Salt as Effective p-Dopants to Oxidize Spiro-OMeTAD for Mesoscopic Sb2S3 Solar Cells
| Autor: | Chih-Chun Chung, Eric Wei-Guang Diau, Ting Wei Tsai, Hui Ping Wu |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Sulfonyl
chemistry.chemical_classification Mesoscopic physics Trifluoromethyl Dopant Kinetics Inorganic chemistry chemistry.chemical_element Salt (chemistry) 02 engineering and technology Photoelectric effect 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Surfaces Coatings and Films Electronic Optical and Magnetic Materials chemistry.chemical_compound General Energy chemistry Lithium Physical and Theoretical Chemistry 0210 nano-technology |
| Zdroj: | The Journal of Physical Chemistry C. 121:18472-18479 |
| ISSN: | 1932-7455 1932-7447 |
| DOI: | 10.1021/acs.jpcc.7b07958 |
| Popis: | 1-Decyl phosphonic acid (DPA) proved an effective p-doping additive to oxidize spiro-OMeTAD as a hole-transporting material (HTM) for nanostructured Sb2S3 extremely thin absorber (ETA) solar cells. DPA had the effect of enhancing the hole conductivities of spiro-OMeTAD in the presence of lithium bis(trifluoromethyl- sulfonyl)-imide (LiTFSI) to significantly improve the device performance. Transient photoelectric measurements and electrochemical impedance spectra of devices fabricated with varied additive conditions provided information about the charge- transport and recombination kinetics and hole conductivities for Sb2S3 devices with additives DPA and LiTFSI that exhibited superior performance. Thirty-five identical devices were fabricated to show the excellent reproducibility and long-term stability in air; the best Sb2S3 ETA device attained efficiency of power conversion 6.0%, which is twice that of a device using other typical additives (LiTFSI and 4-tert-butyl-pyridine) for spiro-OMeTAD serving as HTM. |
| Databáze: | OpenAIRE |
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