Ultrathin Crystalline Silicon Nano and Micro Membranes with High Areal Density for Low-Cost Flexible Electronics

Ju Young Lee, Jongwoon Shin, Kyubeen Kim, Jeong Eun Ju, Ankan Dutta, Tae Soo Kim, Young Uk Cho, Taemin Kim, Luhing Hu, Won Kyung Min, Hyun Suh Jung, Young Sun Park, Sang Min Won, Woon Hong Yeo, Jooho Moon, Dahl Young Khang, Hyun Jae Kim, Jong Hyun Ahn, Huanyu Cheng, Ki Jun Yu*John A. Rogers*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

Ultrathin crystalline silicon is widely used as an active material for high-performance, flexible, and stretchable electronics, from simple passive and active components to complex integrated circuits, due to its excellent electrical and mechanical properties. However, in contrast to conventional silicon wafer-based devices, ultrathin crystalline silicon-based electronics require an expensive and rather complicated fabrication process. Although silicon-on-insulator (SOI) wafers are commonly used to obtain a single layer of crystalline silicon, they are costly and difficult to process. Therefore, as an alternative to SOI wafers-based thin layers, here, a simple transfer method is proposed for printing ultrathin multiple crystalline silicon sheets with thicknesses between 300 nm to 13 µm and high areal density (>90%) from a single mother wafer. Theoretically, the silicon nano/micro membrane can be generated until the mother wafer is completely consumed. In addition, the electronic applications of silicon membranes are successfully demonstrated through the fabrication of a flexible solar cell and flexible NMOS transistor arrays.

Original languageEnglish (US)
Article number2302597
JournalSmall
Volume19
Issue number39
DOIs
StatePublished - Sep 27 2023

Keywords

  • flexible electronics
  • reusable silicon
  • semiconductor electronics applications
  • silicon nano/micro membrane sheet transfer

ASJC Scopus subject areas

  • Engineering (miscellaneous)
  • General Chemistry
  • General Materials Science
  • Biotechnology
  • Biomaterials

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