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退火温度和β-FeSi2薄膜厚度对n-β-FeSi2/p-Si异质结太阳电池的影响 被引量:9

Influence of Annealing Temperature and β-FeSi_2 Layer Thickness on the n-type β-FeSi_2/p-type Si Heterojunction Solar Cells
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摘要 本文采用室温直流磁控溅射Fe-Si组合靶的方法,并通过后续退火温度的优化得到了单一相高质量的β-FeSi2薄膜。结果表明,在本实验条件下得到的未掺杂的β-FeSi2薄膜在室温下是n型导电的,其电学特性存在一个退火温度的最优点:800℃。而且在这个最佳温度点上,在Si(111)衬底上外延得到的薄膜载流子迁移率比在Si(100)上高出了一倍多。在上述研究的基础上,采用p-Si(111)单晶片作为外延生长β-FeSi2薄膜的衬底,并通过退火温度和薄膜厚度的优化制备出了国内第一个n-β-FeSi2/p-Si异质结太阳电池,其Jsc=7.90 mA/cm2,Voc=0.21V,FF=0.23,η=0.38%。 Single-phase β-FeSi2 thin films with high quality was prepared by DC-magnetron sputtering Fe- Si mixed targets, followed by post-annealing. Single-phase n-type β-FeSi2 thin films have been successfully deposited without intentional doping, and 800 ℃ was the best annealing temperature. Moreover, the electron Hall mobility of the β-FeSi2 thin film on Si ( 111 ) substrate was two times as large as the one on Si (100) substrate. Based on the above investigation, by optimizing the annealing temperatures and the β-FeSi2 layer thickness, n-type β-FeSi2/p-type Si heterojunction solar cell was fabricated on p-type Si( 111 ) crystalline silicon substrate, with Jsc of 7.90 mA/cm^2, Voc of 0.21 V, FF of 0. 23 and efficiency of 0. 38%.
作者 郁操 侯国付 刘芳 孙建 赵颖 耿新华 Yu, Cao[1]; Hou, Guo-Fu[1]; Liu, Fang[2]; Sun, Jian[1]; Zhao, Ying[1]; Geng, Xin-Hua[1]
出处 《人工晶体学报》 EI CAS CSCD 北大核心 2009年第3期662-665,676,共5页 Journal of Synthetic Crystals
基金 天津市应用基础研究计划项目(No.07JCYBJC04000) 国家重点基础研究发展计划项目(No.2006CB202602 2006CB202603) 国家科技计划配套项目(No.07QTPTJC29500)
关键词 β-FeSi2薄膜 直流磁控溅射 退火温度 异质结太阳电池 β-FeSi2 thin film DC-magnetron sputtering annealing temperature heterojunction solar cell
作者简介 郁操(1983-),女,浙江省人,硕士。 通讯作者:侯国付。E-mail:guofu_hou@yahoo.com.cn
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