Synergistic boost of output power density and efficiency in In-Li–codoped SnTe
Abstract
In the search for high-performance thermoelectric materials, in addition to conversion efficiency, output power density is also an important consideration for practical applications in generating electrical energy from solar or waste heat. We designed and fabricated an SnTe-based material that exhibits both high conversion efficiency and high output power density by indium and lithium codoping. Indium doping realizes the resonant state in the compound, while lithium doping further increases its carrier concentration by acting as an acceptor as well as dramatically reducing its lattice thermal conductivity by forming disperse precipitates. This work provides an example for finding high-performance thermoelectric materials that are suitable for practical application and provides guidance for future research.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Oct 14, 2019
- Source ID
- 10.1073/pnas.1911085116
Entities
People
- Bo Cui
- Bo Yu
- Ching-Wu Chu
- Fengkai Guo
- Haijun Wu
- Honghao Yao
- Jianbo Zhu
- Jiehe Sui
- Qian Zhang
- Stephen J. Pennycook
- Wei Cai
- Yang Zhang
Organizations
- Air Force Office of Scientific Research
- Harbin Institute of Technology
- National Natural Science Foundation of China
- University of Houston