Self-Passivating hybrid (organic/inorganic) tandem solar cell

Sung Jin Kim, Won Jin Kim, Alexander N. Cartwright, Paras N. Prasad

Research output: Contribution to journalArticle

21 Scopus citations

Abstract

A tandem photovoltaic device structure, consisting of a PbSe nanocrystal film and a P3HT/PCBM bulk heterojunction film, was fabricated. The PbSe film (top layer) serves as a photocurrent generator as well as a UV protector for the underlying polymer cell. The P3HT/PCBM photovoltaic cell (bottom layer) provides the necessary electric field to the top photoconducting layer to extract the photogenerated charge from that layer. The charge extraction from the PbSe layer is demonstrated by using light-biased spectral response measurements. In addition, device lifetime measurements were performed under AM 1.5 and UV-enhanced illumination on the tandem cell and on a control P3HT/PCBM device. These measurements demonstrated that the hybrid tandem cell is significantly more durable due to the preferential UV absorption in the upper inorganic PbSe nanocrystal film.

Original languageEnglish (US)
Pages (from-to)657-661
Number of pages5
JournalSolar Energy Materials and Solar Cells
Volume93
Issue number5
DOIs
StatePublished - May 1 2009

Keywords

  • Hybrid device
  • Nanocrystal quantum dot
  • PbSe
  • Self-passivation
  • Tandem cell

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Electronic, Optical and Magnetic Materials
  • Surfaces, Coatings and Films

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