Solvent-Assisted Gel Printing for Micropatterning Thin Organic-Inorganic Hybrid Perovskite Films

Beomjin Jeong, Ihn Hwang, Sung Hwan Cho, Eui Hyuk Kim, Soonyoung Cha, Jinseong Lee, Han Sol Kang, Suk Man Cho, Hyunyong Choi, Cheolmin Park

Research output: Contribution to journalArticle

37 Citations (Scopus)

Abstract

While tremendous efforts have been made for developing thin perovskite films suitable for a variety of potential photoelectric applications such as solar cells, field-effect transistors, and photodetectors, only a few works focus on the micropatterning of a perovskite film which is one of the most critical issues for large area and uniform microarrays of perovskite-based devices. Here we demonstrate a simple but robust method of micropatterning a thin perovskite film with controlled crystalline structure which guarantees to preserve its intrinsic photoelectric properties. A variety of micropatterns of a perovskite film are fabricated by either microimprinting or transfer-printing a thin spin-coated precursor film in soft-gel state with a topographically prepatterned elastomeric poly(dimethylsiloxane) (PDMS) mold, followed by thermal treatment for complete conversion of the precursor film to a perovskite one. The key materials development of our solvent-assisted gel printing is to prepare a thin precursor film with a high-boiling temperature solvent, dimethyl sulfoxide. The residual solvent in the precursor gel film makes the film moldable upon microprinting with a patterned PDMS mold, leading to various perovskite micropatterns in resolution of a few micrometers over a large area. Our nondestructive micropatterning process does not harm the intrinsic photoelectric properties of a perovskite film, which allows for realizing arrays of parallel-type photodetectors containing micropatterns of a perovskite film with reliable photoconduction performance. The facile transfer of a micropatterned soft-gel precursor film on other substrates including mechanically flexible plastics can further broaden its applications to flexible photoelectric systems.

Original languageEnglish
Pages (from-to)9026-9035
Number of pages10
JournalACS Nano
Volume10
Issue number9
DOIs
Publication statusPublished - 2016 Sep 27

Fingerprint

printing
Perovskite
Printing
Gels
gels
photometers
Polydimethylsiloxane
thin films
Photodetectors
perovskite
boiling
Dimethyl sulfoxide
micrometers
plastics
field effect transistors
Microarrays
Field effect transistors
solar cells
Dimethyl Sulfoxide
Boiling liquids

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Engineering(all)
  • Physics and Astronomy(all)

Cite this

Jeong, Beomjin ; Hwang, Ihn ; Cho, Sung Hwan ; Kim, Eui Hyuk ; Cha, Soonyoung ; Lee, Jinseong ; Kang, Han Sol ; Cho, Suk Man ; Choi, Hyunyong ; Park, Cheolmin. / Solvent-Assisted Gel Printing for Micropatterning Thin Organic-Inorganic Hybrid Perovskite Films. In: ACS Nano. 2016 ; Vol. 10, No. 9. pp. 9026-9035.
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Jeong, B, Hwang, I, Cho, SH, Kim, EH, Cha, S, Lee, J, Kang, HS, Cho, SM, Choi, H & Park, C 2016, 'Solvent-Assisted Gel Printing for Micropatterning Thin Organic-Inorganic Hybrid Perovskite Films', ACS Nano, vol. 10, no. 9, pp. 9026-9035. https://doi.org/10.1021/acsnano.6b05478

Solvent-Assisted Gel Printing for Micropatterning Thin Organic-Inorganic Hybrid Perovskite Films. / Jeong, Beomjin; Hwang, Ihn; Cho, Sung Hwan; Kim, Eui Hyuk; Cha, Soonyoung; Lee, Jinseong; Kang, Han Sol; Cho, Suk Man; Choi, Hyunyong; Park, Cheolmin.

In: ACS Nano, Vol. 10, No. 9, 27.09.2016, p. 9026-9035.

Research output: Contribution to journalArticle

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AU - Jeong, Beomjin

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AU - Cho, Sung Hwan

AU - Kim, Eui Hyuk

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AU - Lee, Jinseong

AU - Kang, Han Sol

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AU - Park, Cheolmin

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