Presentation Information
[9a-PA1-42]Development of a Fully Printable Semiconductor-Sensitized Thermal Cell.
〇(M1)JiaQi Peng1, Motokazu Ishihara2, Sachiko Matsushita1,2 (1.Science Tokyo, 2.elleThermo, Ltd.)
Keywords:
Thermoelectric generator,thermal energy conversion,energy harvesting
A Semiconductor-Sensitized Thermal Cell (STC) is an electrochemical device that converts thermal energy into electrical energy. Conventional STC fabrication commonly relies on sputtering processes, which involve high fabrication costs and limited scalability. In this study, we demonstrate an all-solution-processed STC using printable electrode materials.
A semiconductor ink consisting of acid-treated Ge powder, PVDF binder, and NMP solvent was brush-coated onto an FTO substrate to form the working electrode. A commercial carbon paste was screen-printed onto a glass substrate as the counter electrode. The cell was assembled using a PEG1540-based electrolyte containing NaCl, CuCl, and CuCl2.
The fabricated Ge electrode exhibited low sheet resistance with good spatial uniformity, indicating effective electrical conduction in the printed semiconductor layer. Cyclic voltammetry measurements confirmed the electrochemical activity of the electrode, while the assembled device generated measurable open-circuit voltage and short-circuit current. These results demonstrate the feasibility of fabricating STCs through low-cost solution processing and highlight their potential as an alternative to conventional sputtering-based fabrication methods.
A semiconductor ink consisting of acid-treated Ge powder, PVDF binder, and NMP solvent was brush-coated onto an FTO substrate to form the working electrode. A commercial carbon paste was screen-printed onto a glass substrate as the counter electrode. The cell was assembled using a PEG1540-based electrolyte containing NaCl, CuCl, and CuCl2.
The fabricated Ge electrode exhibited low sheet resistance with good spatial uniformity, indicating effective electrical conduction in the printed semiconductor layer. Cyclic voltammetry measurements confirmed the electrochemical activity of the electrode, while the assembled device generated measurable open-circuit voltage and short-circuit current. These results demonstrate the feasibility of fabricating STCs through low-cost solution processing and highlight their potential as an alternative to conventional sputtering-based fabrication methods.