Effect of the quantum size effect on the performance of solar cells with a silicon nanouwire array embedded in SiO2

Yasuyoshi Kurokawa, Shinya Kato, Yuya Watanabe, Akira Yamada, Makoto Konagai, Yoshimi Ohta, Yusuke Niwa, masaki Hirota

Research output: Contribution to conferencePoster

Abstract

The electrical characteristics of silicon nanowire (SiNW) solar cells with p-type hydrogenated amorphous silicon oxide (Eg=1.9 eV)/n-type SiNWs embedded in SiO2/n-type hydrogenated amorphous silicon (E g=1.7 eV) structure have been investigated using a two-dimensional device simulator with taking the quantum size effects into account. The average bandgap of a SiNW embedded in SiO2 increased from 1.15 eV to 2.71 eV with decreasing the diameter from 10 nm to 1 nm due to the quantum size effect. It should be noted that under the sunlight with AM1.5G the open-circuit voltage (Voc) of SiNW solar cells also increased to 1.54 V with decreasing the diameter of the SiNWs to 1 nm. This result suggests that it is possible to enhance the Voc by the quantum size effect and a SiNW is a promising material for the all silicon tandem solar cells.

Original languageEnglish
Pages145-150
Number of pages6
DOIs
Publication statusPublished - Dec 28 2012
Externally publishedYes
Event2012 MRS Spring Meeting - San Francisco, CA, United States
Duration: Apr 9 2012Apr 13 2012

Other

Other2012 MRS Spring Meeting
CountryUnited States
CitySan Francisco, CA
Period4/9/124/13/12

Fingerprint

Silicon
Solar cells
solar cells
Nanowires
nanowires
silicon
Amorphous silicon
amorphous silicon
Silicon oxides
Open circuit voltage
sunlight
open circuit voltage
silicon oxides
simulators
Energy gap
Simulators

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

Kurokawa, Y., Kato, S., Watanabe, Y., Yamada, A., Konagai, M., Ohta, Y., ... Hirota, M. (2012). Effect of the quantum size effect on the performance of solar cells with a silicon nanouwire array embedded in SiO2. 145-150. Poster session presented at 2012 MRS Spring Meeting, San Francisco, CA, United States. https://doi.org/10.1557/opl.2012.1154

Effect of the quantum size effect on the performance of solar cells with a silicon nanouwire array embedded in SiO2. / Kurokawa, Yasuyoshi; Kato, Shinya; Watanabe, Yuya; Yamada, Akira; Konagai, Makoto; Ohta, Yoshimi; Niwa, Yusuke; Hirota, masaki.

2012. 145-150 Poster session presented at 2012 MRS Spring Meeting, San Francisco, CA, United States.

Research output: Contribution to conferencePoster

Kurokawa, Y, Kato, S, Watanabe, Y, Yamada, A, Konagai, M, Ohta, Y, Niwa, Y & Hirota, M 2012, 'Effect of the quantum size effect on the performance of solar cells with a silicon nanouwire array embedded in SiO2' 2012 MRS Spring Meeting, San Francisco, CA, United States, 4/9/12 - 4/13/12, pp. 145-150. https://doi.org/10.1557/opl.2012.1154
Kurokawa Y, Kato S, Watanabe Y, Yamada A, Konagai M, Ohta Y et al. Effect of the quantum size effect on the performance of solar cells with a silicon nanouwire array embedded in SiO2. 2012. Poster session presented at 2012 MRS Spring Meeting, San Francisco, CA, United States. https://doi.org/10.1557/opl.2012.1154
Kurokawa, Yasuyoshi ; Kato, Shinya ; Watanabe, Yuya ; Yamada, Akira ; Konagai, Makoto ; Ohta, Yoshimi ; Niwa, Yusuke ; Hirota, masaki. / Effect of the quantum size effect on the performance of solar cells with a silicon nanouwire array embedded in SiO2. Poster session presented at 2012 MRS Spring Meeting, San Francisco, CA, United States.6 p.
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