High efficiency AZO-InP nanopillar-based heterojunction solar cells

Seokhun Yun, Young Hun Paik, Sung Jin Kim, Doo Gun Kim, Taeksoo Ji, Jae Cheol Shin

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

This paper reports heterojunction solar cells consisting of InP nanopillars and aluminum-doped zinc oxide (AZO). The AZO layer sputtered on an InP surface is used not only as a transparent electrode, but also as an excellent rectifying junction with InP. More importantly, the wide-bandgap-AZO functions as a window layer of solar cells, thereby suppressing carrier recombination loss at the AZO-InP heterointerface. The InP nanopillar array reduces the light reflectance and increases the optical path length of the solar cells. The AZO-InP nanopillar-based heterojunction solar cells exhibited an open-circuit voltage, short-circuit current density, fill-factor, and power-conversion efficiency of 0.68 V, 36.8 mA/cm2, 68%, and 17.1%, respectively, under air-mass 1.5 simulated solar illumination (100 mW/cm2).

Original languageEnglish (US)
Pages (from-to)726-730
Number of pages5
JournalCurrent Applied Physics
Volume16
Issue number7
DOIs
StatePublished - Jul 1 2016

Fingerprint

Zinc Oxide
Zinc oxide
Aluminum
zinc oxides
Heterojunctions
heterojunctions
Solar cells
solar cells
aluminum
air masses
Open circuit voltage
short circuit currents
open circuit voltage
optical paths
Short circuit currents
Conversion efficiency
Energy gap
Current density
Lighting
illumination

Keywords

  • AZO
  • Heterojunction
  • InP
  • Nanostructure
  • Solar cells

ASJC Scopus subject areas

  • Materials Science(all)
  • Physics and Astronomy(all)

Cite this

High efficiency AZO-InP nanopillar-based heterojunction solar cells. / Yun, Seokhun; Paik, Young Hun; Kim, Sung Jin; Kim, Doo Gun; Ji, Taeksoo; Shin, Jae Cheol.

In: Current Applied Physics, Vol. 16, No. 7, 01.07.2016, p. 726-730.

Research output: Contribution to journalArticle

Yun, Seokhun ; Paik, Young Hun ; Kim, Sung Jin ; Kim, Doo Gun ; Ji, Taeksoo ; Shin, Jae Cheol. / High efficiency AZO-InP nanopillar-based heterojunction solar cells. In: Current Applied Physics. 2016 ; Vol. 16, No. 7. pp. 726-730.
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