Blended Conjugated Host and Unconjugated Dopant Polymers Towards N‐type All‐Polymer Conductors and High‐ZT Thermoelectrics
Abstract
N‐Type thermoelectrics typically consist of small molecule dopant+polymer host. Only a few polymer dopant+polymer host systems have been reported, and these have lower thermoelectric parameters. N‐type polymers with high crystallinity and order are generally used for high‐conductivity ( ) organic conductors. Few n‐type polymers with only short‐range lamellar stacking for high‐conductivity materials have been reported. Here, we describe an n‐type short‐range lamellar‐stacked all‐polymer thermoelectric system with highest of 78 S−1, power factor (PF) of 163 μW m−1 K−2, and maximum Figure of merit (ZT) of 0.53 at room temperature with a dopant/host ratio of 75 wt%. The minor effect of polymer dopant on the molecular arrangement of conjugated polymer PDPIN at high ratios, high doping capability, high Seebeck coefficient (S) absolute values relative to , and atypical decreased thermal conductivity ( ) with increased doping ratio contribute to the promising performance.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Apr 26, 2023
- Source ID
- 10.1002/ange.202219313
Entities
People
- Arlene Chiu
- Connor Ganley
- Emma Tiernan
- Howard E Katz
- Jinfeng Han
- John D. Tovar
- Nicholas Adams
- Patrick E Hopkins
- Patty Mcguiggan
- Paulette Clancy
- Susanna M. Thon
- Taein Lee
- Thomas Paul Russell
- Yufeng Jiang
- Yunjia Song
Organizations
- Division of Chemistry
- Johns Hopkins University
- Lawrence Berkeley National Laboratory
- Office of Naval Research
- University of Virginia