Amorphous Metal Oxide Blocking Layers for Highly Efficient Low

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Cite This: ACS Appl. Mater. Interfaces 2018, 10, 2224−2229

Amorphous Metal Oxide Blocking Layers for Highly Efficient LowTemperature Brookite TiO2‑Based Perovskite Solar Cells Atsushi Kogo,*,†,‡ Yoshitaka Sanehira,‡ Youhei Numata,‡ Masashi Ikegami,‡ and Tsutomu Miyasaka*,‡ †

National Institute of Advanced Industrial Science and Technology (AIST), 1-1-1 Higashi, Tsukuba, Ibaraki 305-8565, Japan Graduate School of Engineering, Toin University of Yokohama, 1614 Kurogane-cho, Aoba, Yokohama, Kanagawa 225-8503, Japan



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S Supporting Information *

ABSTRACT: A fully low-temperature-processed perovskite solar cell was fabricated with an ultrathin amorphous TiOx hole-blocking layer in combination with brookite TiO2 prepared at temperature