The Structural and Electro-optical Properties of MA3Sb2I9-xBrx Perovskite Thin Films Deposited by Using Ultrasonic Spray Pyrolysis
Turkish Physical Society 39th International Physics Congress, Muğla, Türkiye, 31 Ağustos - 04 Eylül 2023, ss.107, (Özet Bildiri)
- Yayın Türü: Bildiri / Özet Bildiri
- Basıldığı Şehir: Muğla
- Basıldığı Ülke: Türkiye
- Sayfa Sayıları: ss.107
- Süleyman Demirel Üniversitesi Adresli: Evet
Özet
Perovskite solar cells are promising semiconductor materials in photovoltaic technology. In addition to the general ABX3 structure of the perovskite, A3B2X9 structure perovskites which have a larger unit cell structure than the ABX3 structure are also studied. To reduce the use of lead metal (Pb2+) in perovskite solar cells, materials with the same atomic arrangement as lead are increasingly being used. For perovskite materials, metal cations such as Bi3+, Sn2+, Ge2+, and Sb3 are frequently preferred instead of Pb. Antimony (Sb+3) metal halide hybrids exhibit low toxicity and excellent stability. In this study, MA3Sb2I9, MA3Sb2I7.5Br1.5, and MA3Sb2I6Br3 perovskite materials were deposited on glass substrates using the ultrasonic spray pyrolysis (USP) method. Structural, elemental, and electro-optical analyses of the perovskites were studied with XRD, EDS, and UV-VIS systems. The position of the peaks in the XRD pattern shifted gradually when the I/Br ratio changed. UV-Vis experiments showed that the band gap of the MA3Sb2I9-xBrx perovskites can be tuned by the changing I/Br ratio. Acknowledge: This work was supported YOK 100/2000 PhD Scholarship.