[18p-M_101-1~7] 12.8 Specific theme: Photoelectric Properties, Device Fabrication and Structural Controls of Organic-Inorganic Hybrid Perovskites

2:45 PM - 3:00 PM JST(5:45 AM - 6:00 AM UTC)

[18p-M_101-4] Control of the surface work function of organic-inorganic perovskite surfaces by utilizing electron-donating polar molecules

〇KOSUKE FUKUZAWA¹, MAHITO TATENO², MASAHIRO OHARA³, NOBUMICHI ARAI⁴, TAKESHI OKADA⁴, RYOTA TOZAKI², KOKI SAWAI¹, HIROYUKI YOSHIDA^1,2,5, NAOYUKI SHIBAYAMA⁶, HISAO ISHII^1,2,5,7, HIROHIKO FUKAGAWA^5,7 (1.F. Eng Chiba Univ., 2.GSSE Chiba Univ., 3.F. Eng. Shinshu Univ., 4.Tosoh Corporation., 5.MCRC Chiba Univ., 6.Toin University of Yokohama., 7.CFS Chiba Univ.)

Keywords:

Organic-Inorganic Perovskite Solar Cells,hybrid perovskite / organic solar cells (HSC)

In hybrid perovskite (PVK) / organic solar cells employing near-infrared-absorbing organic semiconductors, the ionization energy of PVK is often approximately 0.5 eV higher than that of the organic semiconductor, making it important to control the surface work function (φ) of PVK. In this study, we continuously measured the change in φ during the deposition of polar molecules using RKP. This allowed us to distinguish and evaluate the contribution of the intramolecular dipole orientation and the interfacial dipole due to electron-donating functional groups.