@inproceedings{c10398e7b52a40969c97160657654c95,
title = "Tantalum Nitride Hole-Blocking Layer for Efficient Silicon Solar Cells",
abstract = "Minimizing carrier recombination losses at contact regions by using carrier-selective contact materials, instead of heavily doping the silicon, has attracted considerable attention for high-efficiency, low-cost crystalline silicon (c-Si) solar cells. Here we present a novel and stable metal nitride based hole-blocking layer for efficient silicon solar cells.The ALD-deposited tantalum nitride (TaNx) films are demonstrated to provide excellent holeblocking property on silicon surfaces, due to their small conduction band offset and large valence band offset with silicon. Thin TaNx films are found to provide not only moderate surface passivation to silicon surfaces, but also allow a relatively low contact resistivity at the TaNx n-Si heterojunctions. An efficiency over 20% is achieved on n-type silicon solar cells featuring a simple full-area electron-selective TaNx contact, representing an absolute efficiency gain of 4.0% over the control device without TaNxcontact.",
keywords = "Hole-blocking, passivating contact, silicon solar cell, tantalum nitride",
author = "Xinbo Yang and Erkan Aydin and Hang Xu and Jingxuan Kang and Wenzhu Liu and Yimao Wan and Christian Samundsett and Andres Cuevas and Wolf, {Stefaan De}",
note = "Publisher Copyright: {\textcopyright} 2018 IEEE.; 7th IEEE World Conference on Photovoltaic Energy Conversion, WCPEC 2018 ; Conference date: 10-06-2018 Through 15-06-2018",
year = "2018",
month = nov,
day = "26",
doi = "10.1109/PVSC.2018.8548282",
language = "English",
series = "2018 IEEE 7th World Conference on Photovoltaic Energy Conversion, WCPEC 2018 - A Joint Conference of 45th IEEE PVSC, 28th PVSEC and 34th EU PVSEC",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
pages = "2087--2091",
booktitle = "2018 IEEE 7th World Conference on Photovoltaic Energy Conversion, WCPEC 2018 - A Joint Conference of 45th IEEE PVSC, 28th PVSEC and 34th EU PVSEC",
address = "United States",
}