Journal
CURRENT APPLIED PHYSICS
Volume 19, Issue 4, Pages 470-474Publisher
ELSEVIER
DOI: 10.1016/j.cap.2019.01.019
Keywords
Sb2Te3; CH3NH3I; Hybrid; Thermoelectric; Thin film
Funding
- National Natural Science Foundation of China, China [11604212]
- Basical Research Program of Shenzhen [JCYJ20160307113206388]
- Shenzhen Key Lab Fund, Shenzhen, China [ZDSYS 20170228105421966]
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In this work, a new idea of organic-inorganic hybridization was proposed to fabricate flexible p-type - Sb2Te3/CH3NH3I thin films. The CH3NH3I has a strong adsorption which can promote the growth of organic molecules, improve the crystallization, and finally increase electrical conductivity. Post-annealing of the fabricated films increased the phonon scattering, thus resulting in a reduction of thermal conductivity and an increased ZT value. The annealed hybrid-composite film showed a significant enhancement in thermoelectric performance, with a maximum ZT value of 0.94 at a temperature of 413 K, which is twice as large as that of the as-deposited film.
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