Affiliation:
1. Guangdong Greater Bay Area Institute of Integrated Circuit and System
2. Nanjing University of Posts and Telecommunications
3. Institute of Microelectronics of the Chinese Academy of Sciences
4. National University of Defence Technology
Abstract
Abstract
This article proposes a photovoltaic system of ultrathin silicon solar cell by using indoor lighting through enhanced shunt resistance, nanostructure of light-trapping, and tubular daylight system for powering the internet of things (IoT) devices. Simulation results show that, by increasing the shunt resistance from 100 Ω.cm2 to 104 Ω.cm2, the efficiency of indoor solar cell can be improved from less than 0.5% to be over 14%. Moreover, with the help of ultrathin wafer and nanostructure of light-trapping to improve the near-infrared light absorption and open circuit voltage, the efficiency of the indoor amorphous silicon (a-Si) heterojunction solar cell can be further improved to be 17.09%. The tubular daylight system is an excellent supplement to the light indoor intensity and thus can increase the power production.
Publisher
Research Square Platform LLC
Reference20 articles.
1. S. Philipps, F. Ise, W. Warmuth, and P. Projects GmbH, “Photovoltaics Report”, Accessed: Mar. 16, 2023. [Online]. Available: www.ise.fraunhofer.de
2. Silicon heterojunction solar cell with interdigitated back contacts for a photoconversion efficiency over 26%;Yoshikawa K;NatEn,2017
3. Reassessment of the limiting efficiency for crystalline silicon solar cells;Richter A;IEEE J Photovolt,2013
4. “Solar photovoltaic (PV) module prices.” https://ourworldindata.org/grapher/solar-pv-prices (accessed Mar. 02, 2023).
5. S. J. Reichelstein and A. Sahoo, “Cost- and Price Dynamics of Solar PV Modules,” SSRN Electronic Journal, Nov. 2021, doi: 10.2139/ssrn.2727089.