Vapor Phase Selective Growth of Two-Dimensional Perovskite/WS2 Heterostructures for Optoelectronic Applications

Ufuk Erklllç, Pablo Solís-Fernández, Hyun Goo Ji, Keisuke Shinokita, Yung Chang Lin, Mina Maruyama, Kazu Suenaga, Susumu Okada, Kazunari Matsuda, Hiroki Ago

研究成果: Contribution to journalArticle査読

11 被引用数 (Scopus)

抄録

Organic-inorganic hybrid perovskites have attracted increased interest owing to their exceptional optoelectronic properties and promising applications. Monolayers of transition metal dichalcogenides (TMDCs), such as tungsten disulfide (WS2), are also intriguing because of their unique optoelectronic properties and their atomically thin and flexible structures. Therefore, the combination of these different types of materials is very attractive in terms of fundamental science of interface interaction, as well as for the realization of ultrathin optoelectronic devices with high performance. Here, we demonstrate the controlled synthesis of two-dimensional (2D) perovskite/WS2 heterostructures by an all vapor-phase growth approach. This involves the chemical vapor deposition (CVD) growth of monolayer WS2, followed by the vapor-phase selective deposition of 2D PbI2 onto the WS2 with the successive conversion of PbI2 to organic-inorganic perovskite (CH3NH3PbI3). Moreover, the selective growth of the perovskite on prepatterned WS2 enables the direct synthesis of patterned heterostructures, avoiding any damage to the perovskite. The photodetectors utilizing the perovskite/WS2 heterostructure show increased responsivities compared with isolated thin perovskite obtained by conventional solution methods. The integration of 2D perovskite with TMDCs opens a new avenue to fabricate advanced devices by combining their unique properties and overcoming current processing difficulties of perovskites.

本文言語英語
ページ(範囲)40503-40511
ページ数9
ジャーナルACS Applied Materials and Interfaces
11
43
DOI
出版ステータス出版済み - 10 30 2019

All Science Journal Classification (ASJC) codes

  • 材料科学(全般)

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