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 共查询到19条相似文献,搜索用时 49 毫秒
1.
乔良  杨雁南 《激光技术》2014,38(5):590-594
为了提高激光无线能量传输系统的转换效率,基于单结GaAs光电池的工作原理,用调节照射光电池的激光参量的方法,从理论上对激光无线能量传输系统的有关部分进行了优化设计,并通过实验研究了激光波长、激光强度等因素对光电池能量转换效率的影响。结果表明,单结GaAs光电池对单色激光的光电转换效率远高于传统的单晶硅电池,最高转化效率可达61.2%。该结果对于激光无线能量传输技术的应用具有一定参考价值。  相似文献   

2.
描述了用6 ns波长为1 064 nm的激光在SF6中作用于硅表面产生的锥形微观结构过程,测试了经激光处理及未经激光处理之硅晶片制成的硅电池光电转换效率的变化。实验显示,激光处理后的晶片所制电池其光电转换效率提高,其增加量为未经激光处理的电池效率的10%~15%,对这种变化进行了初步机理分析,认为可能与硅逾量电子结合能和Fermi能级有关。激光处理硅晶片的应用,也会进一步改善硅电池制作工艺。  相似文献   

3.
光强均匀度与标准粒子信号分布关系研究   总被引:1,自引:0,他引:1  
为了研究光敏区光强分布对粒子计数器标准粒子信号分布的影响,从理论上分析了光敏区光强概率分布和标准粒子信号幅度概率分布之间的关系,并建立了能统一描述光敏区光强分布均匀度和信号幅度分布均匀度的数学模型,此模型定量分析了光敏区光强均匀度对信号分布曲线的影响,同时也揭示了长期制约国产粒子计数器分辨能力的本质因素,并给出了实验验证.理论和实验结果表明,光敏区光强分布的不均匀性是影响计数器分辨能力的主要因素.  相似文献   

4.
采用细致平衡模型计算了GaAs量子阱太阳能电池的转换效率,同时对量子阱结构带来的几种效应,如准费米能级分离、热载流子效应等进行了分析,并将碰撞离化效应引入此细致平衡模型中,通过计算研究了其对量子阱太阳能电池转换效率的影响.结果表明碰撞离化效应可以提高电池的转换效率,但提高幅度有限.  相似文献   

5.
采用细致平衡模型计算了GaAs量子阱太阳能电池的转换效率,同时对量子阱结构带来的几种效应,如准费米能级分离、热载流子效应等进行了分析,并将碰撞离化效应引入此细致平衡模型中,通过计算研究了其对量子阱太阳能电池转换效率的影响.结果表明碰撞离化效应可以提高电池的转换效率,但提高幅度有限.  相似文献   

6.
敬浩  戚磊  张蓉竹 《半导体光电》2019,40(6):766-770
针对发生损伤后三结GaAs电池的电学特性进行了研究。从三结电池的等效电路模型出发,根据光伏效应相关理论,建立了GaAs三结电池损伤分析模型,具体计算了损伤发生在不同位置时,光电池输出电压、功率、效率的变化。结果表明,顶结发生热熔损伤对电池的电学特性影响最大,将直接导致光电转换效率下降17.23%。中结发生热熔损伤对电池的电学特性影响次之,将引起4.23%的效率下降。底结损伤对电池的电学特性影响相对最小,所导致的光电转换效率下降量为2.42%。  相似文献   

7.
通过对谐振腔增强型(RCE)光电探测器的理论分析和实验测试结果,证明对应不同光束入射角度,RCE光电探测器的模式波长按一定规律可调谐.并给出当入射角度变化10°~60°,模式调谐范围约为40nm,而谐振波长处的量子效率峰值及半高宽FWHM的变化与材料吸收系数紧密相关.  相似文献   

8.
梯度掺杂对太阳能电池转换效率的影响   总被引:2,自引:0,他引:2  
论述了梯度掺杂对太阳能电池光伏转换效率的影响。利用掺杂半导体导带中自由电子数目及静电场理论,计算出了单晶硅指数掺杂的电场,并给出了任意梯度掺杂电场强度所满足的微分方程。  相似文献   

9.
通过对谐振腔增强型(RCE)光电探测器的理论分析和实验测试结果,证明对应不同光束入射角度, RCE光电探测器的模式波长按一定规律可调谐. 并给出当入射角度变化10°~60° ,模式调谐范围约为40nm,而谐振波长处的量子效率峰值及半高宽FWHM的变化与材料吸收系数紧密相关.  相似文献   

10.
通过对谐振腔增强型(RCE)光电探测器的理论分析和实验测试结果,证明对应不同光束入射角度,RCE光电探测器的模式波长按一定规律可调谐.并给出当入射角度变化10°~60°,模式调谐范围约为40nm,而谐振波长处的量子效率峰值及半高宽FWHM的变化与材料吸收系数紧密相关.  相似文献   

11.
    
Consolidated tables showing an extensive listing of the highest independently confirmed efficiencies for solar cells and modules are presented. Guidelines for inclusion of results into these tables are outlined, and new entries since June 2020 are reviewed. In this issue, charts showing efficiency improvements since 1993 are included as well as cell and module area definitions and an updated list of recognized test centres.  相似文献   

12.
    
Consolidated tables showing an extensive listing of the highest independently confirmed efficiencies for solar cells and modules are presented. Guidelines for inclusion of results into these tables are outlined, and new entries since July 2019 are reviewed.  相似文献   

13.
    
Consolidated tables showing an extensive listing of the highest independently confirmed efficiencies for solar cells and modules are presented. Guidelines for inclusion of results into these tables are outlined, and new entries since July 2013 are reviewed. Copyright © 2013 John Wiley & Sons, Ltd.  相似文献   

14.
    
Consolidated tables showing an extensive listing of the highest independently confirmed efficiencies for solar cells and modules are presented. Guidelines for inclusion of results into these tables are outlined and new entries since June 2006 are reviewed. Copyright © 2006 John Wiley & Sons, Ltd.  相似文献   

15.
    
Consolidated tables showing an extensive listing of the highest independently confirmed efficiencies for solar cells and modules are presented. Guidelines for inclusion of results into these tables are outlined and new entries since July 2008 are reviewed. Efficiencies are updated to the new reference solar spectrum tabulated in IEC 60904‐3 Ed. 2 revised in April 2008 and an updated list of recognised test centres is also included. Copyright © 2008 John Wiley & Sons, Ltd.  相似文献   

16.
    
Consolidated tables showing an extensive listing of the highest independently confirmed efficiencies for solar cells and modules are presented. Guidelines for inclusion of results into these tables are outlined and new entries since July, 2008 are reviewed. Copyright © 2007 John Wiley & Sons, Ltd.  相似文献   

17.
    
Consolidated tables showing an extensive listing of the highest independently confirmed efficiencies for solar cells and modules are presented. Guidelines for inclusion of results into these tables are outlined and new entries since January, 2005 are reviewed. Copyright © 2005 John Wiley & Sons, Ltd.  相似文献   

18.
    
Consolidated tables showing an extensive listing of the highest independently confirmed efficiencies for solar cells and modules are presented. Guidelines for inclusion of results into these tables are outlined and new entries since June 2004 are reviewed. Copyright © 2005 John Wiley & Sons, Ltd.  相似文献   

19.
    
Consolidated tables showing an extensive listing of the highest independently confirmed efficiencies for solar cells and modules are presented. Guidelines for inclusion of results into these tables are outlined and new entries since July 2003 are reviewed. Copyright © 2004 John Wiley & Sons, Ltd.  相似文献   

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