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Issue 28, 2018
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High-performance p-type inorganic–organic hybrid thermoelectric thin films

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Abstract

The performance of organic–inorganic hybrid thermoelectric thin films can be dramatically enhanced by optimizing energy filtering and carrier transport states at the organic–inorganic interfaces. In this work, p-type “Sb2Te3/CH3NH3I/Sb2Te3” multilayer thin films were firstly fabricated with varied contents of CH3NH3I, and then an annealing process was used in order to form homogeneous organic–inorganic hybrid thin films. The results revealed that the introduced organic component can promote thin film growth and develop a dense nanostructure with improved crystallinity, thus resulting in a significantly increased Seebeck coefficient and a reduced thermal conductivity as a result of the optimized electronic transport characteristics and enhanced effects of phonon scattering. As is expected, the thermoelectric performance of the hybrid-nanocomposite films is enhanced, achieving the maximum ZT value of 1.55 at a temperature of 413 K, which is several times higher than that of the as-fabricated film, thereby suggesting that the proposed strategy can be applied as an efficient method for the preparation of high-performance thermoelectric thin films.

Graphical abstract: High-performance p-type inorganic–organic hybrid thermoelectric thin films

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Publication details

The article was received on 12 Mar 2018, accepted on 14 Jun 2018 and first published on 14 Jun 2018


Article type: Paper
DOI: 10.1039/C8NR02065E
Citation: Nanoscale, 2018,10, 13511-13519
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    High-performance p-type inorganic–organic hybrid thermoelectric thin films

    Z. Zheng, P. Fan, J. Luo, G. Liang, H. Ma, X. Zhang, C. Yang and Y. Q. Fu, Nanoscale, 2018, 10, 13511
    DOI: 10.1039/C8NR02065E

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