Structural and Opto-Electronic characterizations of ITO lightly codoped with yttrium and europium ions

• Main Authors: Chia-Hao Tsai, 蔡嘉豪
• Other Authors: Chu-Chi Ting
• Format: Others
• Language: zh-TW
• Published: 2009
• Online Access: http://ndltd.ncl.edu.tw/handle/05527290311991720635

碩士 === 國立中正大學 === 光機電整合工程所 === 97 === In this thesis, ITO films were prepared by sol-gel spin-coating method as the transparent conducting layer of solar cell. In order to utilize sunlight in 300-400 nm ultraviolet high-energy section effectively, we used Eu3+ ions doped ITO to fabricate the thin films and the powder. it has no 611 nm emission were Investigated from Eu3+ ions at the PL measure, and we tried to codoped Eu3+-Y3+ into ITO, as a result, the emission of 611 nm was magnificently increased. Finally, we could obtain a quality thin films that the transmittance able to reach 94% , and the resistivity similar to pure ITO thin film, however, it has provided with down-conversion effect to increase the efficiency of solar cell. In addition to the Opto-Electronic characteristic measure , the ITO surface morphology and grain size were observed by the X-ray powder diffraction (XRD) and scanning electron microscopy (SEM) , and X-ray photoelectron spectra (XPS) was analysised the chemical environment of the materials. After the suitable process parameters control, the thin films could be as the luminescent solar concentrators and transparent conductive electrode to enhance the efficiency of solar cells.