Inkjet Printing of Perovskites for Breaking Performance–Temperature Tradeoffs in Fabric-Based Thermistors

Shujie Li, Alex Kosek, Mohammad Naim Jahangir, Rajiv Malhotra, Chih Hung Chang

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

A novel low-temperature route is developed for inkjet printing of the perovskite Cs2SnI6, to create wearable negative-temperature-coefficient thermistors with unprecedented performance on thermally sensitive fabrics. A low processing temperature of 120 °C is achieved by creating a stable and printable ink using binary metal iodide salts, which is thermally transformed into dense Cs2SnI6 crystals after printing. The optimally printed Cs2SnI6 shows a temperature measurement range up to 120 °C, high sensitivity (4400 K), and temperature coefficient of resistivity (0.05 °C−1), and stability under ambient environmental conditions and bending. The approach breaks a critical tradeoff that has hindered wearable fabric-based thermistors by enabling damage-free fabrication of devices with commercially comparable performance, evincing significant applications in multifunctional textiles and beyond.

Original languageEnglish (US)
Article number2006273
JournalAdvanced Functional Materials
Volume31
Issue number1
DOIs
StatePublished - Jan 4 2021

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

Keywords

  • inkjet printing
  • negative-temperature-coefficient thermistors
  • perovskites
  • textiles

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