Abstract
In this paper, we present a method, involving plasma-enhanced atomic layer deposition and constant-power device-localized Joule heating (DLJH), for the selective deposition of palladium oxide (PdO) nanoparticles at the n- region of n+/n-/n+ polysilicon nanobelt (PNB) devices. These PdO-decorated PNB devices were then operated under DLJH so that the temperature of the n- region was maintained during the sensing of H2 gas. From their measured responses, the devices operated at a temperature of 339 K exhibited the most reactive interactions between PdO and H2. Considering the possibility of humidity interference, we also characterized the PdO-decorated PNB devices for H2 sensing at various relative humidities. The PdO nanoparticles on the PNB devices having a grain distance that sustained a spillover effect were almost immune to RH interference.
| Original language | English |
|---|---|
| Pages (from-to) | 10365-10374 |
| Number of pages | 10 |
| Journal | ACS Applied Nano Materials |
| Volume | 6 |
| Issue number | 12 |
| DOIs | |
| State | Published - 23 Jun 2023 |
Keywords
- device-localized Joule heating
- hydrogen sensing
- palladium oxide
- plasma-enhanced atomic layer deposition
- polysilicon nanobelt
- relative humidity
- selective deposition