化学氧化物和钼氧化物叠合膜钝化发射极和后接触硅太阳电池的光伏特性

2019 26th International Workshop on Active-Matrix Flatpanel Displays and Devices (AM-FPD) Pub Date : 2019-07-01 DOI:10.23919/AM-FPD.2019.8830555

Chin-Lung Cheng, C. Liu, Kun-Hung Liao

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摘要

研究了化学氧化物和钼氧化物叠层钝化发射极和后接触(PERC)硅太阳能电池的光伏特性。化学氧化物是由各种硝酸溶液形成的。采用热蒸发法制备了纯度为99.9%的MoO2颗粒。考察了硝酸的浓度和处理时间等参数。与不含化学氧化物的PERC相比，在含25%化学氧化物的PERC中，转化效率(CE)从18%提高到18.6%，绝对提高幅度超过0.6%。SiOx/MoOx堆积膜的负Qot较大，而MoOx/SiOx/Si(100)界面的Dit较低。

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Photovoltaic Characteristics of Passivated Emitter and Rear Contact Silicon Solar Cells with Chemical and Molybdenum Oxides Stacked Films

Photovoltaic characteristics of passivated emitter and rear contact (PERC) silicon solar cells with chemical and molybdenum oxides stacked thin films were investigated. Chemical oxides were formed by various nitric acid solutions. Molybdenum oxides were performed by thermal evaporation from granules of MoO2 (99.9% purity). The parameters, including the concentration and treated time of nitric acid, were investigated.. Compared with the PERC without chemical oxide, the achievement of a conversion efficiency (CE) improvement of more than 0.6% absolute from 18% to 18.6% in PERCs with chemical oxide formed at 25% for 30 s was explored. The promoted mechanism could be attributed to the large negative Qot in SiOx/MoOx bulk stacked films and low Dit in MoOx/SiOx/Si(100) interface.

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2019 26th International Workshop on Active-Matrix Flatpanel Displays and Devices (AM-FPD)

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