@inproceedings{3b68b658ffc84e1a911e97ad17da98b3,
title = "Properties and Imaging of Thick Doped Amorphous Silicon in Direct Contact with Aluminum for Use in Silicon Heterojunction Solar Cells",
abstract = " We present the characterization of amorphous silicon/aluminum carrier-selective contacts in both front- and rear-emitter configurations, where the aluminum makes direct contact with the doped a-Si:H layers in silicon heterojunction solar cells. The resistance and passivation quality of these contacts have been measured using the transmission line measurement and the quasi-steady-state photoconductance techniques, respectively. The thickness of the doped a-Si:H layer in direct contact with the aluminum is 20 nm and post-aluminumsputtering annealing temperature ranges from 150-240 °C. Samples with aluminum on an a-Si:H(n) layer annealed at 180°C had a contact resistivity below 1 mΩcm 2 while the lifetime remained at 4.8 milliseconds- essentially unchanged from the pre-sputtered, passivated sample. These values are superior to those for the traditional silicon heterojunction contact with a transparent conductive oxide layer and can enable devices with low resistive losses and tremendous optical properties through the insertion of a low-refractive index dielectric material at a wellchosen contact fraction. ",
keywords = "amorphous silicon, crystalline silicon, silicon heterojunction solar cells",
author = "Bryan, {Jonathan L.} and Abhinandan Gangopadhyay and Zhengshan Yu and Leilaeioun, {Ashling Mehdi} and Carpenter, {Joe V.} and Jianwei Shi and William Weigand and Fisher, {Kathryn C.} and Smith, {David J.} and Zachary Holman",
year = "2018",
month = nov,
day = "26",
doi = "10.1109/PVSC.2018.8547780",
language = "English (US)",
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 = "1974--1978",
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",
note = "7th IEEE World Conference on Photovoltaic Energy Conversion, WCPEC 2018 ; Conference date: 10-06-2018 Through 15-06-2018",
}