Low temperature processed inverted planar perovskite solar cells by r-GO/CuSCN hole-transport bilayer with improved stability

Towhid H. Chowdhury, Md. Akhtaruzzaman, Md Emrul Kayesh, Ryuji Kaneko, Takeshi Noda, Jae Joon Lee, Ashraful Islam

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

Low temperature processed Perovskite solar cells (PSCs) are popular due to their potential for scalable production. In this work, we report reduced Graphene Oxide (r-GO)/copper (I) thiocyanate (CuSCN) as an efficient bilayer hole transport layer (HTL) for low temperature processed inverted planar PSCs. We have systematically optimized the thickness of CuSCN interlayer at the r-GO/MAPbI3 interface resulting in bilayer HTL structure to enhance the stability and photovoltaic performance of low temperature processed r-GO HTL based PSCs with a standard surface area of 1.02 cm2. With matched valence band energy level, the r-GO/CuSCN bilayer HTL based PSCs showed high power conversion efficiency of 14.28%, thanks to the improved open circuit voltage (VOC) compared to the only r-GO based PSC. Moreover, enhanced stability has been observed for the r-GO/CuSCN based PSCs which retained over 90% of its initial efficiency after 100 h light soaking measured under continuous AM 1.5 sun illumination.

Original languageEnglish
Pages (from-to)652-657
Number of pages6
JournalSolar Energy
Volume171
DOIs
Publication statusPublished - 1 Sep 2018

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Graphite
Oxides
Graphene
Temperature
Copper oxides
Open circuit voltage
Valence bands
Volatile organic compounds
Sun
Electron energy levels
Conversion efficiency
cuprous thiocyanate
Perovskite solar cells
Lighting

Keywords

  • Copper (I) thiocyanate
  • Hole-transport bilayer
  • Perovskite solar cell
  • Reduced graphene oxide
  • Stability

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Materials Science(all)

Cite this

Low temperature processed inverted planar perovskite solar cells by r-GO/CuSCN hole-transport bilayer with improved stability. / Chowdhury, Towhid H.; Akhtaruzzaman, Md.; Kayesh, Md Emrul; Kaneko, Ryuji; Noda, Takeshi; Lee, Jae Joon; Islam, Ashraful.

In: Solar Energy, Vol. 171, 01.09.2018, p. 652-657.

Research output: Contribution to journalArticle

Chowdhury, Towhid H. ; Akhtaruzzaman, Md. ; Kayesh, Md Emrul ; Kaneko, Ryuji ; Noda, Takeshi ; Lee, Jae Joon ; Islam, Ashraful. / Low temperature processed inverted planar perovskite solar cells by r-GO/CuSCN hole-transport bilayer with improved stability. In: Solar Energy. 2018 ; Vol. 171. pp. 652-657.
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AU - Kaneko, Ryuji

AU - Noda, Takeshi

AU - Lee, Jae Joon

AU - Islam, Ashraful

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