Pulsed photoconductivity of chlorophyll a

H. Kassi, S. Hotchandani, Roger Leblanc, N. Beaudoin, M. Dery

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

Pulsed photoconduction study of Al/Chlorophyll a/Al sandwich cells has been carried out in order to investigate the charge transport in chlorophyll a (Chl a). The charge carriers are generated close to the electrode by laser pulse (800 ps) of strongly absorbed wavelength 750 nm by Chl a. The results suggest that the trapping of photogenerated charge carriers is quite significant. The electron transient current is practically absent, and the hole current signal rapidly decreases due to deep trapping. The signal shows a biexponential behavior in time period of approximately 50 μs which could be related to the presence of two trapping species. In millisecond time range, the hole current shows a long tail in addition to the fast component. The analysis of the long tail seems to suggest the dispersive hole transport phenomenon in microcrystalline Chl a.

Original languageEnglish (US)
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
EditorsMarcus F. Lawrence, Arthur J. Frank, S. Ramasesha, Carl C. Wamser
PublisherPubl by Int Soc for Optical Engineering
Pages58-67
Number of pages10
Volume1436
StatePublished - 1991
Externally publishedYes
EventPhotochemistry and Photoelectrochemistry of Organic and Inorganic Molecular Thin Films - Los Angeles, CA, USA
Duration: Jan 23 1991Jan 24 1991

Other

OtherPhotochemistry and Photoelectrochemistry of Organic and Inorganic Molecular Thin Films
CityLos Angeles, CA, USA
Period1/23/911/24/91

Fingerprint

Photoconductivity
chlorophylls
Chlorophyll
photoconductivity
trapping
Charge carriers
charge carriers
Charge transfer
Laser pulses
Wavelength
Electrodes
electrodes
Electrons
pulses
cells
wavelengths
lasers
electrons

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Condensed Matter Physics

Cite this

Kassi, H., Hotchandani, S., Leblanc, R., Beaudoin, N., & Dery, M. (1991). Pulsed photoconductivity of chlorophyll a. In M. F. Lawrence, A. J. Frank, S. Ramasesha, & C. C. Wamser (Eds.), Proceedings of SPIE - The International Society for Optical Engineering (Vol. 1436, pp. 58-67). Publ by Int Soc for Optical Engineering.

Pulsed photoconductivity of chlorophyll a. / Kassi, H.; Hotchandani, S.; Leblanc, Roger; Beaudoin, N.; Dery, M.

Proceedings of SPIE - The International Society for Optical Engineering. ed. / Marcus F. Lawrence; Arthur J. Frank; S. Ramasesha; Carl C. Wamser. Vol. 1436 Publ by Int Soc for Optical Engineering, 1991. p. 58-67.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Kassi, H, Hotchandani, S, Leblanc, R, Beaudoin, N & Dery, M 1991, Pulsed photoconductivity of chlorophyll a. in MF Lawrence, AJ Frank, S Ramasesha & CC Wamser (eds), Proceedings of SPIE - The International Society for Optical Engineering. vol. 1436, Publ by Int Soc for Optical Engineering, pp. 58-67, Photochemistry and Photoelectrochemistry of Organic and Inorganic Molecular Thin Films, Los Angeles, CA, USA, 1/23/91.
Kassi H, Hotchandani S, Leblanc R, Beaudoin N, Dery M. Pulsed photoconductivity of chlorophyll a. In Lawrence MF, Frank AJ, Ramasesha S, Wamser CC, editors, Proceedings of SPIE - The International Society for Optical Engineering. Vol. 1436. Publ by Int Soc for Optical Engineering. 1991. p. 58-67
Kassi, H. ; Hotchandani, S. ; Leblanc, Roger ; Beaudoin, N. ; Dery, M. / Pulsed photoconductivity of chlorophyll a. Proceedings of SPIE - The International Society for Optical Engineering. editor / Marcus F. Lawrence ; Arthur J. Frank ; S. Ramasesha ; Carl C. Wamser. Vol. 1436 Publ by Int Soc for Optical Engineering, 1991. pp. 58-67
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