Fabrication and Analysis of Perovskite Solar Cells (PSCs) by Using Phosphor and TiO2 Photoelectrode
In this work, to explore the influence of phosphor additives on the conversion efficiency of perovskite solar cells (PSC), we introduce a Y3Al5O12:Ce3+ (YAG:Ce3+) phosphor layer. The YAG:Ce3+ nanophosphor acts as a light down-converting material to absorb high energy photons and emit lower energy photons that match well with the absorption of the perovskite layer, yielding more excited photo-generated electron–hole pairs. Therefore, the incident solar light can be harvested more effectively. We used 8 mg/ml of TiO2 mixed with YAG:Ce3+ in the PSCs and realized a light-to-electric energy conversion efficiency of 13.34%, a short circuit current density of 21.23 mA/cm2, an open circuit voltage of 0.97 V, and a FF of 55.96%. Higher efficiencies were achieved for PSCs with phosphor-mixed TiO2 than for cells with pure TiO2 nanoparticles. The samples were characterized by XRD, SEM, UV-vis, PL, and IV-curves. Photoelectrode DSSC with light-to-electric energy conversion efficiency was achieved under a simulated solar light irradiation of 100 mW/cm2 (AM 1.5).
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Document Type: Research Article
Affiliations: Department of Electrical Engineering, Gachon University, 1342 Seongnam-Daero, Sujeong-Gu, Seongnam-Si, Gyeonggi-Do, 13120, Republic of Korea
Publication date: March 1, 2019
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