项目名称: 宽光谱双异质结WAV结构氧化物薄膜太阳能电池的理论模拟与器件制备
项目编号: No.U1304514
项目类型: 联合基金项目
立项/批准年度: 2014
项目学科: 一般工业技术
项目作者: 范佳杰
作者单位: 郑州大学
项目金额: 30万元
中文摘要: 具有高光电转换效率的新型太阳能电池的结构设计及器件制备是新能源材料与器件领域的研究前沿和热点之一。本项目拟在采用一维光电子结构分析模型对电池进行模拟研究的基础上,调节TiO2能带结构及导电性,并将其与CuO及Cu2O薄膜相结合,构造出具有宽光谱响应和高光电转换性能的双异质结WAV结构薄膜太阳能电池。在理论模拟的指导下,采用等离子体束溅射完成相关氧化物半导体薄膜的制备与电池的构造。本项目拟通过调节TiO2能带结构来实现其对太阳能的宽光谱响应,将其吸收带边从紫外光区调节至可见光甚至近红外光区域;同时利用窄带隙的CuO作为长波吸光层,最大限度地将光能变成电能;以Cu2O作为自建电场增强层,提高开路电压。通过对氧化物帯隙渐变结构的调节,降低高能导带电子在带内弛豫引起的能量损失,实现对太阳光宽光谱范围内的无弛豫光电转换。本项目的实施将为制备宽光谱响应的新型氧化物薄膜电池提供重要的理论和实验依据。
中文关键词: 氧化物薄膜电池;WAV结构;理论研究;HiTUS技术;单相CuO;Cu4O3;Cu2O
英文摘要: Structure design and device fabrication of novel solar cell with high conversion efficiency are one of hotspots of new energy materials and devices research. The solar cells will be simulated by one-dimensional Microelectronics and Photonic Structures computer model, which aims at regulating TiO2 band structure and conductivity, and combining CuO and Cu2O thin films, thus leading to a double heterojunction WAV structure thin film solar cell with wide spectral response and high photoelectric conversion performance. Based on the simulation, the preparation of oxide thin film and the configuration of solar cell will be operated in High Target Utilization Plasma Sputtering using metal or alloy targets as raw materials under atmosphere control and adjustment. This project will mainly focus on adjusting the spectral response from UV region to visible or near infrared light region by narrowing the band gap of TiO2, using narrow band gap of CuO as a long-wave light absorbing layer, and using Cu2O as self electric field enhancement layer to improve the open circuit voltage. On the other hand, graded band-gap oxide could lead to enhanced photoelectric performance of a wide spectral irradiance with little loss due to intra-band relaxation from high energy photons. This investigation will provide significant theoretical and
英文关键词: Metal Oxide Thin Film Cell;WAV Structure;Simulation Study;HiTUS Technique;Single Phase CuO;Cu4O3;Cu2O