[Photovoltaic behavior of chlorophyll a and beta-carotene in Langmuir films].
The photovoltaic properties of chlorophyll a and beta-carotene Langmuir films and Langmuir films of a mixure of chlorophyll a and beta-carotene at different molar ratios were investigated. SnO2-optically transparent electrodes were used as a support. It was shown that the film photovoltage value depends on surface pressure and the total film thickness (the number of layers deposited onto SnO2-optically transparent electrodes). Fifteen layers (SP = 35 mH/m) of chlorophyll and 7-10 layers (SP = 20 mH/m) of beta-carotene give rise to a maximal photovoltage of 140 and 270 mV (at a shunt resistance of 10(7) Ohm), correspondingly. It was found that the photovoltage values in films of the carotene-chlorophyll mixture increase with the carotene concentration. The photovoltage value of a film containing 80-90% of carotene exceeds that of single-component pigment films prepared under the same deposition conditions.
Nagovitsyn
I A
IA
Chudinova
G K
GK
Savranskiĭ
V V
VV
Komissarov
G G
GG
D000473:Alkanes; D002734:Chlorophyll; D000077194:Chlorophyll A; D004560:Electricity; D004566:Electrodes; D005227:Fatty Acids; D008027:Light; D008055:Lipids; D010777:Photochemistry; D019207:beta Carotene
D000473:Alkanes; D005227:Fatty Acids; D008055:Lipids; D019207:beta Carotene; D002734:Chlorophyll; D000077194:Chlorophyll A