https://scholars.lib.ntu.edu.tw/handle/123456789/351523
標題: | A simple strategy for improving the energy conversion of multilayered CdTe quantum dot-sensitized solar cells | 作者: | Lan, Guo-Yu Yang, Zusing Lin, Yang-Wei ZONG-HONG LIN Liao, Hao-Ying Chang, Huan-Tsung HUAN-TSUNG CHANG |
公開日期: | 2009 | 卷: | 19 | 期: | 16 | 起(迄)頁: | 2349-2355 | 來源出版物: | Journal of Materials Chemistry | 摘要: | In this paper we describe the preparation of CdTe quantum dot-sensitized solar cells (QDSSCs). We coated FTO substrates with 21 nm-diameter TiO 2 nanoparticles (NPs) and then immersed the system in poly(dimethyldiallylammonium chloride) (PDDA) solution under ambient conditions. The treated substrates were then subjected to 3 nm-diameter CdTe NP solution at 100 °C for various periods of times. To increase the degree of deposition and to obtain CdTe QDs of various sizes, we performed the coating of the CdTe QDs through three heating cycles for 24, 12, or 6 h. The as-prepared (TiO 2)3-PDDA-(QDCdTe)3-FTO electrodes were then used to fabricate (TiO2)3-PDDA-(QD CdTe)3-FTO QDSSCs employing 1-ethyl-3-methylimidazolium thiocyanate incorporating 1.0 M LiI and 0.1 M I2 as electrolytes. The heating treatment allows the QDSSCs to harvest energy at a higher efficiency in the visible region of solar light. As a result, the as-prepared QDSSCs feature a high energy conversion efficiency (η = 2.02%) and a high open-circuit photovoltage (Voc = 850 mV) at 100% sunlight (AM1.5, 100 mW/cm 2). © 2009 The Royal Society of Chemistry. |
URI: | http://www.scopus.com/inward/record.url?eid=2-s2.0-64149131210&partnerID=MN8TOARS http://scholars.lib.ntu.edu.tw/handle/123456789/351523 |
DOI: | 10.1039/b817000b | SDG/關鍵字: | Ambient conditions; Cdte; Degree of depositions; Heating cycles; Heating treatments; High energies; Higher efficiencies; Multi-layered; Open-circuit photovoltage; Poly(dimethyldiallylammonium chloride); Quantum dots; Solar lights; Visible regions; Cadmium alloys; Cadmium compounds; Chlorine compounds; Conversion efficiency; Energy conversion; Heating; Photovoltaic cells; Solar cells; Solar energy; Semiconductor quantum dots |
顯示於: | 化學系 |
在 IR 系統中的文件,除了特別指名其著作權條款之外,均受到著作權保護,並且保留所有的權利。