Solution-processed mesoscopic Bi2S3: polymer photoactive layers

Andrew J. MacLachlan, Flannan T. F. O'Mahony, Anna L. Sudlow, Michael S. Hill, Kieran C. Molloy, Jenny Nelson, Saif A. Haque

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

The fabrication of solution-processed nontoxic mesoporous Bi2S3 structures is demonstrated and the suitability of these structures for use in hybrid solar cells investigated. Mesoporous Bi2S3electrodes are prepared via thermal decomposition of a thin film composed of a bismuth xanthate single source precursor. The resultant Bi2S3films are made up of regular needles with approximate dimensions of 50×500 nm, as confirmed by scanning electron microscopy (SEM). The crystallinity of the Bi2S3 is found to be dependent on the annealing temperature, as determined by X-ray diffraction. The porous Bi2S3 films are infiltrated with the hole conductor P3HT to generate novel hybrid films, and laser-based transient absorption spectroscopy is used to interrogate the charge-separation reaction at the resulting Bi2S3/P3HT heterojunction. Specifically, optical excitation of the hybrid films results in efficient and long-lived charge separation (microsecond to
millisecond timescale), thereby rendering such films suitable for the development of novel low-cost solar-energy conversion devices.

Original languageEnglish
Pages (from-to)1019-1023
Number of pages5
JournalChemPhysChem
Volume15
Issue number6
Early online date5 Mar 2014
DOIs
Publication statusPublished - 14 Apr 2014

Fingerprint Dive into the research topics of 'Solution-processed mesoscopic Bi<sub>2</sub>S<sub>3</sub>: polymer photoactive layers'. Together they form a unique fingerprint.

  • Projects

  • Equipment

  • Cite this

    MacLachlan, A. J., O'Mahony, F. T. F., Sudlow, A. L., Hill, M. S., Molloy, K. C., Nelson, J., & Haque, S. A. (2014). Solution-processed mesoscopic Bi2S3: polymer photoactive layers. ChemPhysChem, 15(6), 1019-1023. https://doi.org/10.1002/cphc.201301103