Photothermoelectric AZO/SiO2/NiO Device

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Abstract

Transparent-conductive-oxide (TCO) materials and transparent devices combining photovoltage and thermoelectric effects are still scarce. Hence, a new transparent-conductive-oxide/insulating/transparent-semiconductor-oxide (TCO-I-TSO) structure combining such effects is developed. It is made of aluminum-doped zinc oxide (AZO)/SiO2/NiO thin films sequentially deposited on glass substrates. AZO exhibits thermo and photovoltage in response to gradient temperature and absorption of UV photons, while NIR photons absorption in the NiO layer. Photovoltage appears in the plane between the AZO and NiO layer when the whole sample is irradiated with near infrared light, and it also depends on the thickness of the SiO2 layer. This photovoltage is continuously monitored on samples placed in a glass window facing south. Throughout the day, the photovoltage varies from 0 to 300 µV proportionally to the light intensity.

Original languageEnglish
Article number2300133
Number of pages8
JournalAdvanced Materials Technologies
Volume8
Issue number15
DOIs
Publication statusPublished - 11 Aug 2023

Keywords

  • infrared absorption
  • photothermoelectrics
  • transparent devices

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