If you are experiencing problems downloading PDF or HTML fulltext, our helpdesk recommend clearing your browser cache and trying again. If you need help in clearing your cache, please click here . Still need help? Email help@ingentaconnect.com

Laser-Induced Intrinsic and Dye-Sensitized Photoconductivity in β-Carotene Glass

$29.00 plus tax (Refund Policy)

Buy Article:

Abstract:

Photoconductivity is studied in thin films of β-carotene glass, an amorphous mixture of β-carotene isomers. Photocurrents are produced by a pulsed dye laser and are on the order of microamperes. The mechanism for production of photocurrent is believed to be two-photon internal photoemission. Photoconduction is also investigated in a variety of organic dyes. These dyes and chlorophyll a are then used to sensitize the photoconduction of β-carotene glass to longer wavelengths than it would normally photoconduct. It is believed that chlorophyll and phthalocyanine donate holes to the carotene after photoexcitation, while the other dyes undergo an energy transfer process. The voltage, laser intensity, and wavelength dependences of the photocurrents are examined and compared with results from earlier studies.

Keywords: Laser-induced photoprocesses; Photoconductivity; Spectral sensitization; β-carotene

Document Type: Research Article

DOI: http://dx.doi.org/10.1366/0003702884430362

Affiliations: Department of Chemistry, The University of Michigan, Ann Arbor, Michigan 48109

Publication date: August 1, 1988

More about this publication?
Related content

Tools

Favourites

Share Content

Access Key

Free Content
Free content
New Content
New content
Open Access Content
Open access content
Subscribed Content
Subscribed content
Free Trial Content
Free trial content
Cookie Policy
X
Cookie Policy
ingentaconnect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more