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  4. Organic photovoltaic integrator with three complementary absorption bands to enhance efficiency
 
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Organic photovoltaic integrator with three complementary absorption bands to enhance efficiency

Journal
Journal of Photonics for Energy
Journal Volume
8
Journal Issue
4
Date Issued
2018
Author(s)
Lee, J.H.
Chen, C.-H.
Lin, C.-L.
Yang, S.-P.
Chiu, T.-L.
JIUN-HAW LEE  
DOI
10.1117/1.JPE.8.045502
URI
https://scholars.lib.ntu.edu.tw/handle/123456789/498273
URL
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85056115454&doi=10.1117%2f1.JPE.8.045502&partnerID=40&md5=ba23160c07e3275ecfaa2c4240805fd8
Abstract
The spectrum of 400 to 1100 nm sunlight can be divided into three bands, each absorbed by organic photovoltaic devices that are particularly efficient under the band in question, to achieve higher photoelectric conversion efficiency. The three bands are the absorption bands of fullerene (C70), chloroaluminum phthalocyanine (ClAlPc), and tin naphthalocyanine dichloride (SnNcCl2), which have peak values of 500, 731, and 863 nm, respectively. C70 is a well-known acceptor, whereas ClAlPc and SnNcCl2 serve as donors. In combination with another donor made of 4,4′-cyclohexylidenebis[N,N-bis(4-methylphenyl)benzenamine] (TAPC), which is almost transparent in 400 to 1100 nm, three devices were fabricated and had active layers of TAPC: C70, ClAlPc: C70, and SnNcCl2: C70. After the doping proportions of these materials had been optimized, the maximum power conversion efficiency (PCE) values of the three devices were 4.52%, 4.3%, and 1.33%, respectively. The properties of donor material dominated the differences among these device behaviors. Subsequently, the overall PCE of a simulated multiple reflection module was calculated using these three devices, which, depending on the arranged sequence in which they were exposed to light and reflected the light to another, generated different absorption spectrum and thus influenced the overall PCE of the photovoltaic integrator. The highest overall simulated and experimental PCE of the photovoltaic integrator was 6.12% and 5.9%, respectively. © 2018 Society of Photo-Optical Instrumentation Engineers (SPIE).
Subjects
absorption; donor materials; organic photovoltaic
SDGs

[SDGs]SDG7

Other Subjects
Absorption; Conversion efficiency; Efficiency; Photoelectricity; Tin compounds; 4-methylphenyl; Donor materials; Maximum power; Multiple reflections; Naphthalocyanines; Organic photovoltaic devices; Organic photovoltaics; Photo-electric conversion efficiency; Absorption spectroscopy
Type
journal article

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