Rapid growth of fully-inorganic flexible Ca_xCoO₂ thin films from a ligand free aqueous precursor ink for thermoelectric applications

Abstract

We report a ligand-free green approach to rapidly grow flexible nanoporous Ca0.35CoO2 thin films from a stable precursor-ink for wide temperature-range thermoelectric applications.

Improved thermoelectric performance of flexible p-type SiGe films by B-doped Al-induced layer exchange

“…Although the low synthesis temper ature of organic materials is attractive, the thermoelectric applications face challenges because of their thermal dete rioration. In line with this, research on inorganic materials for flexible thermoelectric applications has also been active [5][6][7][8][9][10][11][12]. High thermoelectric performance has been dem onstrated with metal compounds [5][6][7], oxides [8][9][10][11], or grapheme [12].…”

Sensors-on-paper: Fabrication of graphite thermal sensor arrays on cellulose paper for large area temperature mapping

“…Further, the existing thermoelectric energy conversion devices/generators are usually manufactured from toxic and expensive semiconductors such as bismuth tellurides, led tellurides, and their alloys [26] , [27] , [28] . Therefore, the current thermoelectric research is focused on finding low-cost and non-toxic thermoelectric conductors for the application [29] , [30] , [31] , [32] , [33] , [34] , [35] , [36] , [37] . With some improvements and modifications in the thermoelectric properties of graphite such as by organic doping or alloying with other semiconductors, they can also be utilized in the fabrication of thermoelectric devices [19] , [38] , [39] , [40] , [41] , [42] , [43] , [44] , [45] .…”

Ce‐filled Ni1.5Co2.5Sb12 Skutterudite Thin Films with Record‐High Figure of Merit And Device Performance

“…[6] Other reported all-inorganic thermoelectric thin films such as SnSe have exhibited ZTs of 0.1 ≈ 0.5 at <800 K, [26] but their thermal stability is relatively low due to the selenium volatilization. [27,28] Oxide-based thermoelectric thin films such as Ca 0.35 CoO 2 , [29] Ca 3 Co 4 O 9 , [30] and SrTiO 3 , [31] have been reported to exhibit high stability at high temperatures due to their oxide natures, but their thermoelectric performance is not appealing enough and hard to be improved (ZTs < 0.3). [32] Therefore, developing new thermoelectric all-inorganic thin films with simultaneously high thermoelectric performance and thermal stability is urgent.…”