Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group
Journal Home About Issues in Progress Current Issue All Issues Feature Issues

Enhanced photosynthetic activity in Spinacia oleracea by spectral modification with a photoluminescent light converting material

Qi Xia, Miroslaw Batentschuk, Andres Osvet, Peter Richter, Donat P. Häder, Juergen Schneider, Christoph J. Brabec, Lothar Wondraczek, and Albrecht Winnacker

Open Access Open Access

Abstract

The spectral conversion of incident sunlight by appropriate photoluminescent materials has been a widely studied issue for improving the efficiency of photovoltaic solar energy harvesting. By using phosphors with suitable excitation/emission properties, also the light conditions for plants can be adjusted to match the absorption spectra of chlorophyll dyes, in this way increasing the photosynthetic activity of the plant. Here, we report on the application of this principle to a high plant, Spinacia oleracea. We employ a calcium strontium sulfide phosphor doped with divalent europium (Ca0.4Sr0.6S:Eu2+, CSSE) on a backlight conversion foil in photosynthesis experiments. We show that this phosphor can be used to effectively convert green to red light, centering at a wavelength of ~650 nm which overlaps the absorption peaks of chlorophyll a/b pigments. A measurement system was developed to monitor the photosynthetic activity, expressed as the CO2 assimilation rate of spinach leaves under various controlled light conditions. Results show that under identical external light supply which is rich in green photons, the CO2 assimilation rate can be enhanced by more than 25% when the actinic light is modified by the CSSE conversion foil as compared to a purely reflecting reference foil. These results show that the phosphor could be potentially applied to modify the solar spectrum by converting the green photons into photosynthetically active red photons for improved photosynthetic activity.

© 2013 Optical Society of America

Full Article  |  PDF Article
More Like This
Influence of photoluminophore-modified agro textile spunbond on growth and photosynthesis of cabbage and lettuce plants

Robert N. Khramov, Vladimir D. Kreslavski, Evgeniya A. Svidchenko, Nikolay M. Surin, and Anatoly A. Kosobryukhov
Opt. Express 27(22) 31967-31977 (2019)

Photosynthetic spectral response curves of saffron leaves

Xinyu Ji, Dan Gao, Weizhong Pei, Xue Zhang, Fusheng Li, Qiuyi Han, and Shanduan Zhang
Appl. Opt. 60(32) 10207-10213 (2021)

Color rendition engineering of phosphor-converted light-emitting diodes

Artūras Žukauskas, Rimantas Vaicekauskas, Pranciškus Vitta, Akvilė Zabiliūtė, Andrius Petrulis, and Michael Shur
Opt. Express 21(22) 26642-26656 (2013)

View More...

Cited By

Optica participates in Crossref's Cited-By Linking service. Citing articles from Optica Publishing Group journals and other participating publishers are listed here.

Alert me when this article is cited.


Figures (6)
Fig. 1
Fig. 1 Schematic of the set-up for assessment of the photosynthetic activity: 1 - metal halide lamps, 2 - dichroic filters, 3 - water shielding, 4 - intact leaves of S. o. fixed on a sponge, 5 - C- or R-foil, 6 - CO2/humidity/temperature sensors, 7 - ventilation fan, 8 - gas inlet/outlet for compressed air through a water bottle, 9 - spectrometric probe, 10 –data logger.

Download Full Size | PDF

Fig. 2
Fig. 2 PPFD spectra in the presence of the R-foil and the C-foil, respectively, in comparison to that of the primary incident light. For clarity, the intensity of the latter was divided by factor of 20.

Download Full Size | PDF

Fig. 3
Fig. 3 Calculated spectra of the effective incident light, derived from multiplication of the PPFD spectra of the C- and R-foil, respectively, with the absorption spectrum of the S.o. chloroplasts. The inset shows the absorption spectrum of the S. o. chloroplasts.

Download Full Size | PDF

Fig. 4
Fig. 4 Incident PPFD in the reaction cell (left axis) and absorbed fraction of PPFD (right axis) in the presence of C- and R-foil, respectively, as a function of primary incident photon flux density PFD.

Download Full Size | PDF

Fig. 5
Fig. 5 (a) CO2 concentration inside the reaction cell recorded over time in the presence of C- and R-foil, respectively. Data in (a) was adopted from Ref [25]. (b) Specific CO2 assimilation rate in the presence of C. and R-foil, respectively, under various primary photon flux densities. The dashed lines represent fits of the data to a Levenberg-Marquardt function, Eq. (1).

Download Full Size | PDF

Fig. 6
Fig. 6 CO2 concentration in the presence of the C-foil under various primary photon flux densities as a function of time.

Download Full Size | PDF

Tables (2)

Tables Icon

Table 1 Integrated fractions of PPFD in the presence of the R-foil and the C-foil, respectively, for selected spectral regions and relative to the total PPFD integrated over the full spectrum (%).

View Table | View all tables in this article
Tables Icon

Table 2 Integrated absorbed PPFD fraction in the presence of the R-foil and the C-foil, respectively, for selected spectral regions and relative to the total PPFD integrated over the full spectrum (%).

View Table | View all tables in this article

Equations (1)

Equations on this page are rendered with MathJax. Learn more.

P x = P m I 0 K + I 0 − R x ,
Select as filters
Select Topics Cancel
Top
       
© Copyright 2024 | Optica Publishing Group. All rights reserved, including rights for text and data mining and training of artificial technologies or similar technologies.
Privacy | Terms of Use