(001) faceted-Ga-TiO2 microtablet synthesis and its organic perovskite sensitized solar cells characterization

• Published in: Journal of alloys and compounds Vol. 674; pp. 470 - 476
• Main Authors: Ahmed Al-She'irey, Altaf Yahya, Md Saad, Siti Khatijah, Umar, Akrajas Ali, Rahman, Mohd Yusri Abd, Salleh, Muhamad Mat
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 25-07-2016
• Subjects: DSSCs; facet; Ga-TiO2 (GTO); Microtablet; Perovskite sensitizer; DSSCs; Ga-TiO2 (GTO); Microtablet; facet; Perovskite sensitizer
• ISSN: 0925-8388; 1873-4669
• DOI: 10.1016/j.jallcom.2016.02.270

Metal doping on the anatase TiO2 produces many effect including narrowing the band gap and creates a mid-gap state for facile carrier transport in the structure. This paper reports the study on the effect of Ga doping on the photoactivity of TiO2 microtablet in the perovskite sensitive solar cell (PSC). It was found that the Ga doping enhances the interfacial characteristic between TiO2 and perovskite layer as well as the carrier transport in the device. The power conversion efficiency of the PSC device can be improved from 0.23 to 2.46% upon the doping of Ga in the TiO2 microtablet system. Detailed preparation process and mechanism of the device performance improvement will be discussed.
[Display omitted] Ga doped enhances the performance of the perovskite sensitized solar cell due to improvement of interface characteristic and facile carrier transport.
•Facile synthetic approach for anatase (001)-faceted Ga-doped TiO2 microtablet.•Fabrication of organic perovskite sensitized-solar cell.•Enhancement of carrier transport and interface characteristic by Ga doping.