TY - JOUR
T1 - Effect of modular diffraction gratings on absorption in P3HT:PCBM layers
AU - Cocilovo, Byron
AU - Amooali, Akram
AU - Lopez-Santiago, Alejandra
AU - Favela, Jacob
AU - Islam, Safatul
AU - Duong, Binh
AU - Gangopadhyay, Palash
AU - Fallahi, Mahmoud
AU - Pemberton, Jeanne E.
AU - Thomas, Jayan
AU - Norwood, Robert A.
PY - 2013/2/10
Y1 - 2013/2/10
N2 - Various gratings with 700 nm feature spacings are patterned on the reverse side of organic solar cell active layers to increase the path length and constrain light to the cell through total internal reflection. The absorption enhancementis studied for 15, 40, and 120 nm active layers. We were able to confine 9% of the incident light over the wavelength range of 400-650 nm, with thinner gratings having a greater enhancement potential. The measurement setup utilizing an integrating sphere to fully characterize scattered or diffracted light is also fully described.
AB - Various gratings with 700 nm feature spacings are patterned on the reverse side of organic solar cell active layers to increase the path length and constrain light to the cell through total internal reflection. The absorption enhancementis studied for 15, 40, and 120 nm active layers. We were able to confine 9% of the incident light over the wavelength range of 400-650 nm, with thinner gratings having a greater enhancement potential. The measurement setup utilizing an integrating sphere to fully characterize scattered or diffracted light is also fully described.
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U2 - 10.1364/AO.52.001025
DO - 10.1364/AO.52.001025
M3 - Article
C2 - 23400064
AN - SCOPUS:84874496384
SN - 1559-128X
VL - 52
SP - 1025
EP - 1034
JO - Applied optics
JF - Applied optics
IS - 5
ER -