Reversed organic-inorganic hybrid tandem solar cells for improved interfacial series resistances and balanced photocurrents

Taehee Kim, Youn Su Kim, Jin Young Choi, Jun Hong Jeon, Won Woong Park, Sun Woo Moon, Sung Min Kim, Seunghee Han, Bongsoo Kim, Doh Kwon Lee, Honggon Kim, Jin Young Kim, Min Jae Ko, Kyungkon Kim

Research output: Contribution to journalArticlepeer-review

9 Scopus citations

Abstract

We report a promising approach to fabricate organic-inorganic hybrid tandem photovoltaic devices with a reversed configuration. High bandgap hydrogenated amorphous silicon (a-Si:H) was deposited with plasma-enhanced chemical vapor deposition onto a solution-processed low bandgap organic photovoltaic (OPV) subcell. Two important factors for efficient tandem solar cells, interfacial series resistance (RS,int) and balanced photocurrents, were investigated. The intimate interfacial contact eliminated the RS,int, and sufficient transmittance of the OPV front subcell led to the well-balanced photocurrents. As a result, this reversed hybrid tandem device showed an enhanced efficiency of 3.3% and an open-circuit voltage of 1.51 V.

Original languageEnglish
Pages (from-to)103-107
Number of pages5
JournalSynthetic Metals
Volume175
DOIs
StatePublished - 2013

Keywords

  • Amorphous silicon
  • Balanced photocurrents
  • Hybrid tandem solar cells
  • Interfacial series resistance
  • Organic solar cells

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