Effect of defect density and energy level mismatch on the performance of perovskite solar cells by numerical simulation

M. S. Jamal, S. A. Shahahmadi, P. Chelvanathan, Nilofar Asim, H. Misran, M. I. Hossain, N. Amin, Kamaruzzaman Sopian, Md. Akhtaruzzaman

Research output: Contribution to journalArticle

Abstract

The defects at the absorber and interface layer of organic-inorganic lead halide perovskite solar cells are unfavorable for efficiency as well as the stability. In this study, we have performed the numerical simulation on inverted planar structure perovskite solar cell based on NiO as a hole transport material (HTM) by SCAPS -1 D. Here we investigated the effects of defect density and energy level of the perovskite absorber layer and perovskite/HTM interface layer on the performance, respectively. The analysis revealed that values of J sc , V oc , and FF of perovskite solar cells are significantly reduced with increasing the defect density of perovskite layer. The power conversion efficiency severely reduced from 25 to 5% when the defect density increased from 10 13 to 10 18 cm −3 , respectively. A similar trend was also found in case of interfacial defect between Perovskite and HTM layer. It was found that the defect energy level more than 0.3 eV above conduction band of perovskite has almost no detrimental effect on the device's efficiency.

Original languageEnglish
Pages (from-to)1204-1210
Number of pages7
JournalOptik
Volume182
DOIs
Publication statusPublished - 1 Apr 2019

Fingerprint

Defect density
Perovskite
Electron energy levels
solar cells
energy levels
defects
Computer simulation
simulation
Defects
absorbers
Conduction bands
planar structures
Conversion efficiency
Interfaces (computer)
Lead
halides
Perovskite solar cells
perovskite
conduction bands
trends

Keywords

  • Defect density
  • Defect level
  • Numerical simulation
  • Perovskite solar cell
  • SCAPS-1D

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering

Cite this

Effect of defect density and energy level mismatch on the performance of perovskite solar cells by numerical simulation. / Jamal, M. S.; Shahahmadi, S. A.; Chelvanathan, P.; Asim, Nilofar; Misran, H.; Hossain, M. I.; Amin, N.; Sopian, Kamaruzzaman; Akhtaruzzaman, Md.

In: Optik, Vol. 182, 01.04.2019, p. 1204-1210.

Research output: Contribution to journalArticle

Jamal, M. S. ; Shahahmadi, S. A. ; Chelvanathan, P. ; Asim, Nilofar ; Misran, H. ; Hossain, M. I. ; Amin, N. ; Sopian, Kamaruzzaman ; Akhtaruzzaman, Md. / Effect of defect density and energy level mismatch on the performance of perovskite solar cells by numerical simulation. In: Optik. 2019 ; Vol. 182. pp. 1204-1210.
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