Chemical bath deposition of CdS quantum dots on vertically aligned ZnO nanorods for quantum dots-sensitized solar cells

• Published in: Electrochemistry communications Vol. 11; no. 1; pp. 103 - 106
• Main Authors: Lee, Wonjoo, Min, Sun Ki, Dhas, Vivek, Ogale, Satishchandra B., Han, Sung-Hwan
• Format: Journal Article
• Language: English
• Published: Lausanne Elsevier B.V 2009; Amsterdam Elsevier; New York, NY
• Subjects: Applied sciences; Chemical bath deposition; Energy; Exact sciences and technology; Natural energy; Photosensitization; Photovoltaic conversion; Quantum dots; Solar cells; Solar cells. Photoelectrochemical cells; Solar energy; Wet-chemical process; Wet-chemical process; Solar cells; Photosensitization; Chemical bath deposition; Quantum dots; Dye-sensitized solar cell; Scanning electron microscopy; Quantum dot; Semiconductor materials; Zinc Oxides; Surface structure; Morphology; Nanorod
• ISSN: 1388-2481; 1873-1902
• DOI: 10.1016/j.elecom.2008.10.042

Formation of CdS quantum dots (Q dots) on the vertically aligned ZnO nanorods electrode was carried out by chemical bath deposition. The diameter and thickness of ZnO nanorods are ∼100–150
nm and ∼1.6
μm, respectively, and CdS Q dots on ZnO nanorods have a diameter of smaller than 15
nm. In application of the Q dots-sensitized solar cells, composite film exhibited a power conversion efficiency of 0.54% under air mass 1.5 condition (80
mW/cm
2), and incident-photon-to-current conversion efficiency showed 18.6%.