NDLI: Enhanced efficiency of inverted bulk heterojunction solar cells with embedded silica nanoparticles

Content Provider	IEEE Xplore Digital Library
Author	Gollu, S.R. Murthy, M.S. Sharma, R. Srinivas, G. Ganguly, S. Gupta, D.
Copyright Year	2014
Description	Author affiliation: Dept. of Electr. Eng., Indian Inst. of Technol. Bombay, Mumbai, India (Murthy, M.S.; Ganguly, S.) \|\| Dept. of Metall. Eng. & Mater. Sci., Indian Inst. of Technol. Bombay, Mumbai, India (Gollu, S.R.; Sharma, R.; Srinivas, G.; Gupta, D.)
Abstract	Incorporation of nanoparticles in the active layer is one of the possible approaches to improve the efficiency of bulk heterojunction organic solar cells (BHJ OSCs). Here, we have synthesized silica nanoparticles $(SiO_{2}$ NPs) using the modified stober method and studied the dispersion of various concentrations of $SiO_{2}$ NPs in poly (3-hexylthiophene), [6, 6]-phenyl $C_{61}-butyric$ acid methyl ester (P3HT: PCBM) blend. It was found that the inverted geometry device with concentration of 2 wt% of $SiO_{2}$ NPs and having the structure ITO/ZnO (NPs)/P3HT: PCBM: $SiO_{2}$ $NPs/MoO_{3}/Al$ shows a maximum efficiency of 1.95 %, which is more than 32 % larger compared to devices without $SiO_{2}$ NPs. UV-Vis absorption measurements suggest that the incorporation of $SiO_{2}$ NPs into a P3HT: PCBM blend improves the absorption. This absorption enhancement, supported also by finite difference time domain (FDTD) calculations of Mie scattering, results in the observed efficiency improvement.
Starting Page	1745
Ending Page	1749
File Size	728132
Page Count	5
File Format	PDF
e-ISBN	9781479943982
DOI	10.1109/PVSC.2014.6925258
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2014-06-08
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Silicon compounds Annealing Gold Absorption Current density Materials Zinc oxide power conversion efficiency (PCE) Organic solar cell Silica nanoparticles P3HT: PCBM UV-Vis absorption mie scattering lumerical
Content Type	Text
Resource Type	Article

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