Self-Position of Au NPs in Perovskite Solar Cells: Optical and Electrical Contribution

Da Seul Lee, Wanjung Kim, Bong Geun Cha, Jeong Kwon, Sung June Kim, Min Kim, Jaeyun Kim, Dong Hwan Wang, Jong Hyeok Park

Research output: Contribution to journalArticle

55 Citations (Scopus)

Abstract

Metallic nanoparticles (NPs) exhibit a localized surface plasmon resonance (LSPR) and act as scattering centers and subwavelength antennas, so metallic NPs can be incorporated into perovskite solar cells (PSCs) to effectively improve the light absorption of light harvesting devices. Here, we have embedded Au nanoparticles (NPs) into the hole transport layer (HTL) of the PSCs to investigate the photovoltaic effect of the PSCs with Au NPs. Interestingly, it was found that Au NPs dispersed spiro-OMeTAD HTL solution could naturally end up located near the perovskite layer as the result of the spin-coating step. Solar cell performance observations indicate that the LSPR and electrical effects of Au NPs enhance the photovoltaic response of PSCs, in spite of a slight decrease in the open-circuit voltage (VOC), by causing an incredible improvement in the photocurrent density as a dominant factor.

Original languageEnglish
Pages (from-to)449-454
Number of pages6
JournalACS Applied Materials and Interfaces
Volume8
Issue number1
DOIs
Publication statusPublished - 2016 Jan 13

All Science Journal Classification (ASJC) codes

  • Materials Science(all)

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