P-type mesoscopic nickel oxide/organometallic perovskite heterojunction solar cells

Kuo Chin Wang, Jun Yuan Jeng, Po Shen Shen, Yu Cheng Chang, Wei-Guang Diau, Cheng Hung Tsai, Tzu Yang Chao, Hsu Cheng Hsu, Pei Ying Lin, Peter Chen*, Tzung Fang Guo, Ten Chin Wen

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

333 Scopus citations


In this article, we present a new paradigm for organometallic hybrid perovskite solar cell using NiO inorganic metal oxide nanocrystalline as p-type electrode material and realized the first mesoscopic NiO/perovskite/[6,6]-phenyl C61-butyric acid methyl ester (PC 61 BM) heterojunction photovoltaic device. The photo-induced transient absorption spectroscopy results verified that the architecture is an effective p-type sensitized junction, which is the first inorganic p-type, metal oxide contact material for perovskite-based solar cell. Power conversion efficiency of 9.51% was achieved under AM 1.5 G illumination, which significantly surpassed the reported conventional p-type dye-sensitized solar cells. The replacement of the organic hole transport materials by a p-type metal oxide has the advantages to provide robust device architecture for further development of all-inorganic perovskite-based thin-film solar cells and tandem photovoltaics.

Original languageEnglish
Article number4756
JournalScientific reports
StatePublished - 23 Apr 2014

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