Enhanced Photovoltaic Effect in n-3C-SiC/p-Si Heterostructure Using a Temperature Gradient for Microsensors
Article
Nguyen, Hung, Nguyen, Thanh, Nguyen, Duy Van, Phan, Hoang-Phuong, Nguyen, Tuan Khoa, Dao, Dzung Viet, Nguyen, Nam-Trung, Bell, John and Dinh, Toan. 2023. "Enhanced Photovoltaic Effect in n-3C-SiC/p-Si Heterostructure Using a Temperature Gradient for Microsensors." ACS Applied Materials and Interfaces. 15 (32), pp. 38930-38937. https://doi.org/10.1021/acsami.3c06699
| Article Title | Enhanced Photovoltaic Effect in n-3C-SiC/p-Si Heterostructure Using a Temperature Gradient for Microsensors |
|---|---|
| ERA Journal ID | 40638 |
| Article Category | Article |
| Authors | Nguyen, Hung, Nguyen, Thanh, Nguyen, Duy Van, Phan, Hoang-Phuong, Nguyen, Tuan Khoa, Dao, Dzung Viet, Nguyen, Nam-Trung, Bell, John and Dinh, Toan |
| Journal Title | ACS Applied Materials and Interfaces |
| Journal Citation | 15 (32), pp. 38930-38937 |
| Number of Pages | 8 |
| Year | 2023 |
| Publisher | American Chemical Society |
| ISSN | 1944-8244 |
| 1944-8252 | |
| Digital Object Identifier (DOI) | https://doi.org/10.1021/acsami.3c06699 |
| Web Address (URL) | https://pubs.acs.org/doi/full/10.1021/acsami.3c06699 |
| Abstract | The development of fifth-generation (5G) communications and the Internet of Things (IoT) has created a need for high-performance sensing networks and sensors. Improving the sensitivity and reducing the energy consumption of these sensors can improve the performance of the sensing network and conserve energy. This paper reports a large enhancement of the photovoltaic effect in a 3C-SiC/Si heterostructure and the tunability of the photovoltage under the impact of a temperature gradient, which has the potential to increase the sensitivity and reduce the energy consumption of microsensors. To start with, cubic silicon carbide (3C-SiC) was grown on a silicon wafer, and a micro-3C-SiC/Si heterostructure device was then fabricated using standard photolithography. The result revealed that the sensor could either capture light energy, transform it into electrical energy for self-power purposes, or detect light with intensities of 1.6 and 4 mW/cm2. Under the impact of the temperature gradient induced by conduction heat transfer from a heater, the measured photovoltage was improved. This thermo-phototronic coupling enhanced the photovoltage up to 51% at a temperature gradient of 8.73 K and light intensity of 4 mW/cm2. Additionally, the enhancement can be tuned by controlling the direction of the temperature gradient and the temperature difference. These findings indicate the promise of the temperature gradient in SiC/Si heterostructures for developing high-performance temperature sensors and self-powered photodetectors. |
| Keywords | microsensors |
| Related Output | |
| Is part of | Thermo-phototronic Effect in Double Semiconductor Heterostructures for Highly Sensitive Self-Powered Sensors |
| Contains Sensitive Content | Does not contain sensitive content |
| ANZSRC Field of Research 2020 | 401410. Microtechnology |
| Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
This article is part of a UniSQ Thesis by publication. See Related Output. | |
| Byline Affiliations | School of Engineering |
| Centre for Future Materials | |
| University of New South Wales | |
| Griffith University |
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