@article{MallickRoeschFrankeetal.2020,
  author    = {Mofasser Mallick and Andres Georg R{\"o}sch and Leonard Franke and Sarfraz Ahmed and Andre Gall and Jasmin Aghassi-Hagmann and Holger Ge{\"s}wein and Uli Lemmer},
  title     = {High-Performance Ag-Se-Based n-Type Printed Thermoelectric Materials for High Power Density Folded Generators},
  series   = {ACS Applied Materials \& Interfaces},
  volume    = {12},
  number    = {17},
  address   = {Washington, DC},
  organization    = {American Chemical Society},
  issn      = {1944-8244 (Print)},
  doi       = {10.1021/acsami.0c01676},
  pages     = {19655 -- 19663},
  year      = {2020},
  abstract  = {High-performance Ag–Se-based n-type printed thermoelectric (TE) materials suitable for room-temperature applications have been developed through a new and facile synthesis approach. A high magnitude of the Seebeck coefficient up to 220 μV K–1 and a TE power factor larger than 500 μW m–1 K–2 for an n-type printed film are achieved. A high figure-of-merit ZT ∼0.6 for a printed material has been found in the film with a low in-plane thermal conductivity κF of ∼0.30 W m–1 K–1. Using this material for n-type legs, a flexible folded TE generator (flexTEG) of 13 thermocouples has been fabricated. The open-circuit voltage of the flexTEG for temperature differences of ΔT = 30 and 110 K is found to be 71.1 and 181.4 mV, respectively. Consequently, very high maximum output power densities pmax of 6.6 and 321 μW cm–2 are estimated for the temperature difference of ΔT = 30 K and ΔT = 110 K, respectively. The flexTEG has been demonstrated by wearing it on the lower wrist, which resulted in an output voltage of ∼72.2 mV for ΔT ≈ 30 K. Our results pave the way for widespread use in wearable devices.},
  language  = {en}
}