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

10 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 - Lee, Jae Joon

AU - Islam, Ashraful

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