Fig. 5: Systematic investigation of thermoelectric performance in CuI across varied parameters.

The thermoelectric performance of CuI was systematically studied under various parameters, focusing on those potentially influencing the Seebeck effect. One parameter was selectively adjusted (highlighted in red and underlined), while the others remained constant. a In-plane Seebeck coefficient of CuI under diverse parameter conditions. b Electrical conductivity of CuI thin films across different parameter settings. c Power factor of CuI thin films under various parameter configurations.