Modulation of light absorption by optical spacer in perovskite solar cells

Kangmin Kim, Buyoung Jung, Neetesh Kumar, Yoomin Eom, Woochul Kim

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Lead halide perovskite solar cells with planar heterojunction configuration have recently attracted tremendous attention because of their excellent power conversion efficiencies. The modulation of optical absorption by using an optical spacer layer is a unique method to enhance the device efficiency. Here, we demonstrate the application of thin ZnO layer that act as an optical spacer that enhance the power conversion efficiency perovskite devices from 8.92% to 10.7%, which is mainly due to increment in short-circuit current density by 16% compared to the reference solar cell. The simulation data revealed that ZnO acts as an optical spacer layer that shifts length (average) of electric field |E| 2 distribution from 500 nm to 750 nm wavelength is 25 nm in the perovskite layer. Which represents that exciton generation region is moved to near the hole transport layer that enhances the exciton dissociation efficiency and device efficiency.

Original languageEnglish
Pages (from-to)592-595
Number of pages4
JournalPhysica Status Solidi - Rapid Research Letters
Volume10
Issue number8
DOIs
Publication statusPublished - 2016 Aug 1

Fingerprint

electromagnetic absorption
spacers
Light absorption
solar cells
Modulation
modulation
Excitons
Perovskite
Conversion efficiency
Short circuit currents
excitons
Heterojunctions
Solar cells
Current density
Lead
Electric fields
data simulation
Wavelength
short circuit currents
halides

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics

Cite this

Kim, Kangmin ; Jung, Buyoung ; Kumar, Neetesh ; Eom, Yoomin ; Kim, Woochul. / Modulation of light absorption by optical spacer in perovskite solar cells. In: Physica Status Solidi - Rapid Research Letters. 2016 ; Vol. 10, No. 8. pp. 592-595.
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Modulation of light absorption by optical spacer in perovskite solar cells. / Kim, Kangmin; Jung, Buyoung; Kumar, Neetesh; Eom, Yoomin; Kim, Woochul.

In: Physica Status Solidi - Rapid Research Letters, Vol. 10, No. 8, 01.08.2016, p. 592-595.

Research output: Contribution to journalArticle

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