TY - JOUR
T1 - High-Resolution Multicolor Patterning of Metal Halide Perovskite Nanocrystal Thin Films through Rapid-Evaporation-Assisted Strategy
AU - Ahn, Junhyuk
AU - Lee, Yong Min
AU - Jeon, Joongoo
AU - Bang, Junsung
AU - Jeon, Sanghyun
AU - Woo, Ho Kun
AU - Lee, Sang Yeop
AU - Bae, Jung Ho
AU - Kim, Woosik
AU - Choi, Young Kyun
AU - Kim, Sung Joong
AU - Oh, Soong Ju
N1 - Funding Information:
This research was supported by the Creative Materials Discovery Program through the National Research Foundation of Korea (NRF) funded by Ministry of Science and ICT (No. NRF‐2018M3D1A1059001);); Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Science, ICT and Future Planning (2022R1A2C4001517); BK21 FOUR Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education (No. 4199990514635); and Material Innovation Project (No. NRF‐2021M3H4A3026733).
Publisher Copyright:
© 2022 Wiley-VCH GmbH.
PY - 2022/10/10
Y1 - 2022/10/10
N2 - Material integrations with the desired shape, size, and dimension allow for the fabrication of high resolution and high performance devices. However, the patterning of all-inorganic halide perovskite nanocrystals (NCs), promising building blocks for optics and optoelectronics, has been a fundamental challenge owing to their unstable and reactive structures and properties. Here, a rapid-evaporation-assisted patterning strategy is reported that simultaneously pattern CsPbBr3 NC thin films and tune the color by selectively printing the anion-exchange ink of micro-sized droplets. The rapid evaporation time is investigated according to the droplet size, falling into a range that is faster than the structural degradation time but slower than the chemical reaction time of anion exchange. Structural, chemical, optical analyses, and analytical estimation of droplet evaporation are conducted. As a result, high-resolution multicolor patterns with minimum feature size down to 5 µm and a pitch of <2 µm, covering the entire visible emission range, are achieved. It is believed that the multicolor patterning technique of PeNCs will significantly contribute to the development of next-generation devices, such as image sensors, displays, and other fields.
AB - Material integrations with the desired shape, size, and dimension allow for the fabrication of high resolution and high performance devices. However, the patterning of all-inorganic halide perovskite nanocrystals (NCs), promising building blocks for optics and optoelectronics, has been a fundamental challenge owing to their unstable and reactive structures and properties. Here, a rapid-evaporation-assisted patterning strategy is reported that simultaneously pattern CsPbBr3 NC thin films and tune the color by selectively printing the anion-exchange ink of micro-sized droplets. The rapid evaporation time is investigated according to the droplet size, falling into a range that is faster than the structural degradation time but slower than the chemical reaction time of anion exchange. Structural, chemical, optical analyses, and analytical estimation of droplet evaporation are conducted. As a result, high-resolution multicolor patterns with minimum feature size down to 5 µm and a pitch of <2 µm, covering the entire visible emission range, are achieved. It is believed that the multicolor patterning technique of PeNCs will significantly contribute to the development of next-generation devices, such as image sensors, displays, and other fields.
KW - anion exchange
KW - droplet evaporations
KW - multicolor patterning
KW - nanocrystals
KW - perovskites
UR - http://www.scopus.com/inward/record.url?scp=85127397498&partnerID=8YFLogxK
U2 - 10.1002/admt.202200031
DO - 10.1002/admt.202200031
M3 - Article
AN - SCOPUS:85127397498
SN - 2365-709X
VL - 7
JO - Advanced Materials Technologies
JF - Advanced Materials Technologies
IS - 10
M1 - 2200031
ER -