1. Low-Cost Black Phosphorus Nanofillers for Improved Thermoelectric Performance in PEDOT:PSS Composite Films
- Author
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Ashraful Azam, Jungmo Kim, Travis G. Novak, Chien Viet Nguyen, Sun Hwa Park, Seokwoo Jeon, Hosun Shin, Jae Yong Song, and Kisun Kim
- Subjects
Materials science ,business.industry ,Doping ,Composite number ,02 engineering and technology ,010402 general chemistry ,021001 nanoscience & nanotechnology ,Thermoelectric materials ,01 natural sciences ,Exfoliation joint ,0104 chemical sciences ,PEDOT:PSS ,Electrical resistivity and conductivity ,Seebeck coefficient ,Thermoelectric effect ,Optoelectronics ,General Materials Science ,0210 nano-technology ,business - Abstract
In recent years, two-dimensional black phosphorus (BP) has seen a surge of research because of its unique optical, electronic, and chemical properties. BP has also received interest as a potential thermoelectric material because of its high Seebeck coefficient and excellent charge mobility, but further development is limited by the high cost and poor scalability of traditional BP synthesis techniques. In this work, high-quality BP is synthesized using a low-cost method and utilized in a PEDOT:PSS film to create the first ever BP composite thermoelectric material. The thermoelectric properties are found to be greatly enhanced after the BP addition, with the power factor of the film, with 2 wt % BP (36.2 μW m–1 K–2) representing a 109% improvement over the pure PEDOT:PSS film (17.3 μW m–1 K–2). A simultaneous increase of mobility and decrease of the carrier concentration is found to occur with the increasing BP wt %, which allows for both Seebeck coefficient and electrical conductivity to be increased. Thes...
- Published
- 2018
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