Ultra-low-power indoor light harvesting and solar cell characterization system

Uršič, Darjo (avtor), Pirc, Matija (avtor), Jošt, Marko (avtor), Topič, Marko (avtor), Jankovec, Marko (avtor)

In this study, we present a development of a solar-powered Internet-of-Things (IoT) device, that incorporates both light energy harvesting and solar cell monitoring, which we demonstrate by long term monitoring of a single perovskite solar cell in office-like indoor environment. Using off-the-shelf components we engineered a compact, self-sufficient IoT device, with a remarkable 75% efficient energy harvesting (EH) method, at input currents in a range of microamperes. The IoT device acquires environmental data (irradiance, temperature, humidity) and solar cell electrical parameters including its IV curve, which it sends over a Bluetooth low energy (BLE) connection to a nearby access point. A single lab-scale perovskite solar cell was used to evaluate the device in a real-world office setting, over a period of one year. Our findings demonstrate that employing a perovskite solar cell with a 1 ▫$cm^2$▫ active area and a 1 F supercapacitor as a charge storage, meets the energy demands for the continuous operation of the developed IoT device at low irradiance conditions. Additionally, irradiance sensor data in combination with the full IV curve measurements of the solar cell are used to monitor the available energy and appropriately react to the environment and solar cell changes, while maintaining an extremely low average power consumption of 6 uW. At the same time, the acquired data provide a valuable information about the solar cell’s electrical behaviour, which makes the developed system an easy to use and versatile long-term monitoring device.

• Jezik: Angleški jezik
• Ključne besede: data consolidation, energy harvesting, energy storage, indoor photovoltaics, perovskite solar cells
• Vrsta gradiva: Članek v reviji
• Tipologija: 1.01 - Izvirni znanstveni članek
• Organizacija: FE - Fakulteta za elektrotehniko
• Status publikacije: Objavljeno
• Različica publikacije: Objavljena publikacija
• Leto izida: 2024
• Št. strani: Str. 169442-169451
• Številčenje: Vol. 12
• PID: 20.500.12556/RUL-165159
• UDK: 621.383.51
• ISSN pri članku: 2169-3536
• DOI: 10.1109/ACCESS.2024.3492319
• COBISS.SI-ID: 214515971
• Datum objave v RUL: 25.11.2024

Gradivo je del revije

• Naslov: IEEE access
• Založnik: Institute of Electrical and Electronics Engineers
• ISSN: 2169-3536
• COBISS.SI-ID: 519839513

Licence

• Licenca: CC BY-NC-ND 4.0, Creative Commons Priznanje avtorstva-Nekomercialno-Brez predelav 4.0 Mednarodna
• Povezava: http://creativecommons.org/licenses/by-nc-nd/4.0/deed.sl
• Opis: Najbolj omejujoča licenca Creative Commons. Uporabniki lahko prenesejo in delijo delo v nekomercialne namene in ga ne smejo uporabiti za nobene druge namene.

Sekundarni jezik

• Jezik: Slovenski jezik
• Ključne besede: obdelava podatkov, črpanje energije, shranjevanje energije, fotovoltaika v notranjih prostorih, perovskitne sončne selice

Projekti

• Financer: ARIS - Javna agencija za znanstvenoraziskovalno in inovacijsko dejavnost Republike Slovenije
• Številka projekta: P2-0415
• Naslov: Fotovoltaika in elektronika