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A simple CdS nanoparticles cascading approach for boosting N3 dye/ZnO nanoplates DSSCs overall performance |
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| Authors: | Swapnil B Ambade Rajaram S Mane Anil V Ghule Go-Woon Lee Ramphal Sharma Oh-shim Joo Rohan B Ambade Soo-Hyoung Lee Sung-Hwan Han |
| Institution: | 1. Inorganic Nano-Materials Laboratory, Department of Chemistry, Hanyang University, Haengdang-dong 17, Sungdong-ku, Seoul 133-791, Republic of Korea;2. Organic Optoelectronic Materials Laboratory, Division of Semiconductor and Chemical Engineering, Chonbuk National University, Jeonju, Republic of Korea;3. Clean Energy Research Center, Korea Institute of Science and Technology, Seoul 130-650, Republic of Korea;4. School of Physical Sciences, Swami Ramanand Teerth Marathwada University, Nanded 431606, M.S., India |
| Abstract: | Enhanced photosensitization in presence of CdS nanoparticles is achieved in electrochemically deposited ZnO nanoplates and N3 loaded dye-sensitized solar cells. Chemically embedded CdS nanoparticles act as a sandwiching layer between ZnO nanoplates and dye molecules by overcoming current limiting serious Zn2+/dye insulating complex formation and CdS photo-corrosion issues. The X-ray diffraction and the scanning electron microscopy confirm the ZnO with vertically aligned nanoplates, perpendicular to the substrate surface. Amorphous CdS is monitored using electron dispersive X-ray analysis. The low and high resolution transmission electron microscope images confirm the presence of CdS nanoparticles over ZnO nanoplates which later is supported by an increase in optical absorbance and shift in band edge. About 400% increase in solar conversion efficiency with this cascade arrangement is achieved when compared with without CdS which could be fascinating while designing solid state solar cells in presence of suitable p-type layer. |
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