Structural design of BaSi2 solar cells with a-SiC electron-selective transport layers.

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Title: Structural design of BaSi2 solar cells with a-SiC electron-selective transport layers.
Authors: Du, Rui, Aonuki, Sho, Hasebe, Hayato, Kido, Kazuki, Takenaka, Haruki, Toko, Kaoru, Mesuda, Masami, Suemasu, Takashi
Source: Japanese Journal of Applied Physics; 5/5/2023, Vol. 62 Issue SD, p1-7, 7p
Abstract: Sputter-deposited polycrystalline BaSi2 films capped with a 5 nm thick a-SiC layer showed high photoresponsivity. This means that the a-SiC layer functions as a capping layer to prevent surface oxidation of BaSi2. Based on the measured absorption edge, the electron affinity of the a-SiC layer, and the work function of the TiN layer, the a-SiC is considered to act as an electron transport layer (ETL) for the BaSi2 light absorber layer/a-SiC interlayer/TiN contact structure in a BaSi2 solar cell. Using a 10 nm thick p+-BaSi2 layer as a hole transport layer, we investigated the effect of the BaSi2/a-SiC layered structure on the device performance of a BaSi2-pn homojunction solar cell by a one-dimensional device simulator (AFORS-HET v2.5). The a-SiC ETL effectively separates photogenerated carriers and allows transport of electrons while blocking holes to achieve an efficiency of 22% for a 500 nm thick BaSi2 light absorber layer. [ABSTRACT FROM AUTHOR]
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  Label: Title
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  Data: Structural design of BaSi<subscript>2</subscript> solar cells with a-SiC electron-selective transport layers.
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  Data: <searchLink fieldCode="AR" term="%22Du%2C+Rui%22">Du, Rui</searchLink><br /><searchLink fieldCode="AR" term="%22Aonuki%2C+Sho%22">Aonuki, Sho</searchLink><br /><searchLink fieldCode="AR" term="%22Hasebe%2C+Hayato%22">Hasebe, Hayato</searchLink><br /><searchLink fieldCode="AR" term="%22Kido%2C+Kazuki%22">Kido, Kazuki</searchLink><br /><searchLink fieldCode="AR" term="%22Takenaka%2C+Haruki%22">Takenaka, Haruki</searchLink><br /><searchLink fieldCode="AR" term="%22Toko%2C+Kaoru%22">Toko, Kaoru</searchLink><br /><searchLink fieldCode="AR" term="%22Mesuda%2C+Masami%22">Mesuda, Masami</searchLink><br /><searchLink fieldCode="AR" term="%22Suemasu%2C+Takashi%22">Suemasu, Takashi</searchLink>
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  Data: Japanese Journal of Applied Physics; 5/5/2023, Vol. 62 Issue SD, p1-7, 7p
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Sputter-deposited polycrystalline BaSi<subscript>2</subscript> films capped with a 5 nm thick a-SiC layer showed high photoresponsivity. This means that the a-SiC layer functions as a capping layer to prevent surface oxidation of BaSi<subscript>2</subscript>. Based on the measured absorption edge, the electron affinity of the a-SiC layer, and the work function of the TiN layer, the a-SiC is considered to act as an electron transport layer (ETL) for the BaSi<subscript>2</subscript> light absorber layer/a-SiC interlayer/TiN contact structure in a BaSi<subscript>2</subscript> solar cell. Using a 10 nm thick p<superscript>+</superscript>-BaSi<subscript>2</subscript> layer as a hole transport layer, we investigated the effect of the BaSi<subscript>2</subscript>/a-SiC layered structure on the device performance of a BaSi<subscript>2</subscript>-pn homojunction solar cell by a one-dimensional device simulator (AFORS-HET v2.5). The a-SiC ETL effectively separates photogenerated carriers and allows transport of electrons while blocking holes to achieve an efficiency of 22% for a 500 nm thick BaSi<subscript>2</subscript> light absorber layer. [ABSTRACT FROM AUTHOR]
– Name: Abstract
  Label:
  Group: Ab
  Data: <i>Copyright of Japanese Journal of Applied Physics is the property of IOP Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.35848/1347-4065/acab09
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        Text: English
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            – D: 05
              M: 05
              Text: 5/5/2023
              Type: published
              Y: 2023
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