@inproceedings{16f5b40a1cb9421b91c45865a164aed5,
title = "TCAD Modeling of Interdigitated Back Contact Solar Cells with Hybrid Diffusion and Tunnel Oxide Passivated Contacts",
abstract = "The interdigitated back contact (IBC) silicon solar cells such as heterojunction with an intrinsic thin-film (HIT) and polycrystalline silicon on oxide (POLO) have both achieved a record power conversion efficiency (PCE) exceeding 26%. However, the complicated fabrication procedures and high cost currently hinder the deployment of these novel IBC solar cells in the photovoltaic market. Here, we investigate an n-type IBC solar cell architecture incorporating hybrid diffusion and tunnel oxide passivated contacts (TOPCon) to mitigate the fabrication complexity. A Sentaurus TCAD model which takes into account the tunneling mechanism of silicon oxides is developed and validated with a fabricated device. Subsequently, we investigate the impact of design parameters such as the anode/cathode ratio, the anode width with a fixed gap size, and the deviation of the laser contact openings. Based on the correlations between the design parameters and device characteristics, we can choose a practical device design. Finally, we demonstrate an IBC solar cell with a PCE of 20.3% fabricated with an improved metal contact process that lowers the contact resistivity.",
keywords = "Heterojunction with interdigitated Back Contacts, Interdigitated Back Contacts, TCAD",
author = "Huang, {Chien Chi} and Yang, {Ting Yun} and Wang, {Ling Yu} and Chang, {Han Chen} and Kuo, {Ming Tsun} and Wen, {Ya Ping} and Huang, {Chorng Jye} and Peichen Yu",
note = "Publisher Copyright: {\textcopyright} 2021 IEEE.; 48th IEEE Photovoltaic Specialists Conference, PVSC 2021 ; Conference date: 20-06-2021 Through 25-06-2021",
year = "2021",
month = jun,
day = "20",
doi = "10.1109/PVSC43889.2021.9518438",
language = "English",
series = "Conference Record of the IEEE Photovoltaic Specialists Conference",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
pages = "502--506",
booktitle = "2021 IEEE 48th Photovoltaic Specialists Conference, PVSC 2021",
address = "United States",
}