While photo-thermoelectric (PTE) sensors are potentially suitable for testing applications, such as non-destructive material-identification in ultrabroad millimeter-wave (MMW)–infrared (IR) bands, their device designs have primarily employed a single material as the channel. In general, PTE sensors combine photo-induced heating with associated thermoelectric (TE) conversion, and the employment of a single material channel regulates the utilization of devices by missing the opportunity for fully utilizing their fundamental parameters. Here, long-standing technical difficulties in the PTE sensor design field induce such crucial situations, where typical constituent materials exhibit trade-off trends between photo-absorptance values (for heating) and the Seebeck coefficients (for TE conversion).
To this end, this manuscript made the following significant contributions.
The paper was published online in the international scientific journal, Small Science (February 20, 2025).
＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊
<Researcher>
Kou Li: Assistant Professor, Department of Electrical, Electronic, and Communication Engineering, Faculty of Science and Engineering, Chuo University
Yuto Matsuzaki: Master course student, Department of Electrical, Electronic, and Communication Engineering, Graduate School of Science and Engineering, Chuo University
Yukio Kawano: Department of Electrical, Professor, Electronic, and Communication Engineering, Faculty of Science and Engineering, Chuo University
Reiji Tadenuma: Bachelor student (at the time of research), Department of Electrical, Electronic, and Communication Engineering, Faculty of Science and Engineering, Chuo University
Yuto Aoshima: Bachelor student (at the time of research), Department of Electrical, Electronic, and Communication Engineering, Faculty of Science and Engineering, Chuo University
<Author>
Yuto Matsuzaki †,1 , Reiji Tadenuma †,1 , Yuto Aoshima †,1 , Minami Yamamoto 1 , Leo Takai 1 , Yukito Kon 1 , Daiki Sakai 1 , Norika Takahashi 1 , Ryo Koshimizu 1 , Qi Zhang 1 , Naoko Hagiwara 1 , Meiling Sun 2,3 , Daiki Shikichi 1 , Raito Ota 1 , Sayaka Hirokawa 1 , Yukio Kawano* 1,4,5 , and Kou Li* ,1
† Co-first author
* Corresponding author
K.L., Y.M., and Y.Ka. conceptualized this work and coordinated the experiments. Y.M. and K.L. wrote the manuscript. Y.M., R.T., Y.A., M.Y., L.T., Y.Ko., D.Sa., N.T., R.K., Q.Z., N.H., M.S., D.Sh., R.O., S.H., and K.L. performed the experiments.
<Affiliation>
1 Department of Electrical, Electronic, and Communication Engineering, Faculty of Science and Engineering, Chuo University
2 Laboratory for Future Interdisciplinary Research of Science and Technology, Tokyo Institute of Technology
3 Department of Electrical and Electronic Engineering, School of Engineering, Tokyo Institute of Technology
4 National Institute of Informatics
5 Kanagawa Industrial Institute of Science and Technology
Small Science
Experimental study
Not applicable
All-solution-processable hybrid photo-thermoelectric sensors with carbon nanotube absorbers and bismuth composite electrodes for non-destructive testing
20-Feb-2025
The authors acknowledge NOF Co. for providing surfactants. The authors also thank Zeon Co. for providing CNT solutions. This work was partially supported by many Funders. For detailed funding information, please refer to the "Funders" section.