Improved power conversion efficiency for bulk heterojunction solar cells incorporating CdTe-CdSe nanoheterostructure acceptors and a conjugated polymer donor

Smita Dayal, Haizheng Zhong, Nikos Kopidakis, Gregory D. Scholes, Gary Rumbles

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

We report photovoltaic devices based on composites of a branched nanoheterostructure containing a CdTe core and CdSe arms, CdTe(c)-CdSe(a), combined with either poly(3-hexylthiophene), P3HT, or poly[2,6-(4,4-bis-(2-ethylhexyl)-4H-cyclopenta[2,1-b;3,4-b′]dithiophene)-alt-4,7-(2,1,3-benzothiadiazole)], PCPDTBT, with solar power conversion efficiencies of 1.2% and 1.8%, respectively. A comparison with previously reported composite devices of a related branched nanoheterostructure: CdSe(c)-CdTe(a) reveals an improved device performance that is attributed to a better electron percolation pathway provided by the dominant, higher electron affinity CdSe arms of the nanoheterostructures.

Original languageEnglish
Article number057409
JournalJournal of Photonics for Energy
Volume5
Issue number1
DOIs
Publication statusPublished - Jan 1 2015

Fingerprint

Conjugated polymers
Conversion efficiency
Heterojunctions
heterojunctions
Solar cells
solar cells
Electron affinity
Composite materials
polymers
Solar energy
composite materials
electron affinity
Electrons
electrons

Keywords

  • nanoheterostructures
  • p3HT
  • PCPDTBT
  • photovoltaic devices
  • solar power conversion efficiency

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Renewable Energy, Sustainability and the Environment

Cite this

Improved power conversion efficiency for bulk heterojunction solar cells incorporating CdTe-CdSe nanoheterostructure acceptors and a conjugated polymer donor. / Dayal, Smita; Zhong, Haizheng; Kopidakis, Nikos; Scholes, Gregory D.; Rumbles, Gary.

In: Journal of Photonics for Energy, Vol. 5, No. 1, 057409, 01.01.2015.

Research output: Contribution to journalArticle

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