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公开(公告)号:US20130263923A1
公开(公告)日:2013-10-10
申请号:US13442146
申请日:2012-04-09
IPC分类号: H01L31/0264 , H01L31/18
CPC分类号: H01L31/0725 , H01L31/0735 , Y02E10/544
摘要: In a solar cell having one or more subcells, at least one subcell is provided with a reverse heterojunction, the reverse heterojunction being formed with an emitter and an adjacent base, wherein the emitter has a band gap that is at least 10 meV lower than that of the adjacent base in order to reduce sheet resistance of the emitter and/or increase the subcell current with minimal effect on the open-circuit voltage. Because of the increase in current, the decrease in emitter sheet resistance, and relatively unchanged open-circuit voltage of the subcell, the efficiency of a solar cell employing one or more subcells with reverse heterojunctions is enhanced.
摘要翻译: 在具有一个或多个子电池的太阳能电池中,至少一个子电池具有反向异质结,反向异质结由发射极和相邻的基底形成,其中发射极的带隙至少低于10meV, 以减小发射极的薄层电阻和/或增加子电池电流,同时对开路电压的影响最小。 由于电流的增加,发射极电阻的降低和子电池的开路电压相对不变,所以采用具有反向异质结的一个或多个子电池的太阳能电池的效率提高。
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公开(公告)号:US09153724B2
公开(公告)日:2015-10-06
申请号:US13442146
申请日:2012-04-09
IPC分类号: H01L31/042 , H01L31/0725 , H01L31/0735
CPC分类号: H01L31/0725 , H01L31/0735 , Y02E10/544
摘要: In a solar cell having one or more subcells, at least one subcell is provided with a reverse heterojunction, the reverse heterojunction being formed with an emitter and an adjacent base, wherein the emitter has a band gap that is at least 10 meV lower than that of the adjacent base in order to reduce sheet resistance of the emitter and/or increase the subcell current with minimal effect on the open-circuit voltage. Because of the increase in current, the decrease in emitter sheet resistance, and relatively unchanged open-circuit voltage of the subcell, the efficiency of a solar cell employing one or more subcells with reverse heterojunctions is enhanced.
摘要翻译: 在具有一个或多个子电池的太阳能电池中,至少一个子电池具有反向异质结,反向异质结由发射极和相邻的基底形成,其中发射极的带隙至少低于10meV, 以减小发射极的薄层电阻和/或增加子电池电流,同时对开路电压的影响最小。 由于电流的增加,发射极电阻的降低和子电池的开路电压相对不变,所以采用具有反向异质结的一个或多个子电池的太阳能电池的效率提高。
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