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首页> 外文期刊>Circuits and systems >Power Conversion Enhancement of CdS/CdTe Solar Cell Interconnected with Tunnel Diode
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Power Conversion Enhancement of CdS/CdTe Solar Cell Interconnected with Tunnel Diode

机译：与隧道二极管互连的CdS / CdTe太阳能电池的功率转换增强

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摘要

One of the most promising solar cell devices is cadmium telluride (CdTe) based. These cells however, have their own problems of stability and degradation in efficiency. Measurements show that CdS/CdTe solar cell has high series resistance which degrades the performance of solar cell energy conversion. Both active layers (CdS and CdTe) had been fabricated by thermal evaporation and tested individually. It was found that CdS window layer of 300 nm have the lowest series resistance with maximum light absorption. While 5-7 urn CdTe absorber layer absorbed more than 90% of the incident light with minimum series resistance. A complete CdS/CdTe solar cell was fabricated and tested. It was found that deposited cell without heat treatment shows that the short circuit current increment decreases as the light intensity increases. This type of deposited cell has low conversion efficiency. The energy conversion efficiency was improved by heat treatment, depositing heavily doped layer at the back of the cell and minimizing the contact resistivity by depositing material with resistivity less than 1 mil-cm2. All these modifications were not enough because the back contact is non-ohmic. Tunnel diode of CdTe (p++)/CdS (n++) was deposited in the back of the cell. The energy conversion efficiency was improved by more than 7%.
机译：最有前途的太阳能电池设备之一是碲化镉（CdTe）。然而，这些电池具有其自身的稳定性和效率下降的问题。测量表明，CdS / CdTe太阳能电池具有高串联电阻，这会降低太阳能电池能量转换的性能。这两个有源层（CdS和CdTe）均通过热蒸发法制成，并分别进行了测试。发现300nm的CdS窗口层具有最低的串联电阻和最大的光吸收。而5-7 ur的CdTe吸收层吸收了90％以上的入射光，并且具有最小的串联电阻。制作并测试了完整的CdS / CdTe太阳能电池。发现未经热处理的沉积电池显示短路电流增量随着光强度的增加而减小。这种沉积电池的转换效率低。通过热处理，在电池背面沉积重掺杂层，并通过沉积电阻率小于1 mil-cm2的材料，使接触电阻率最小，从而提高了能量转换效率。所有这些修改都是不够的，因为后触点是非欧姆的。 CdTe（p ++）/ CdS（n ++）的隧道二极管沉积在电池的背面。能量转换效率提高了7％以上。

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  • 来源
    《Circuits and systems》 |2012年第3期|p.230-237|共8页
  • 作者

    Wagah F. Mohammed; Omar Daoud; Munther Al-Tikriti;

  • 作者单位

    Communications and Electronics Department, Faculty of Engineering, Philadelphia University, Amman, Jordan;

    Communications and Electronics Department, Faculty of Engineering, Philadelphia University, Amman, Jordan;

    Communications and Electronics Department, Faculty of Engineering, Philadelphia University, Amman, Jordan;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    CdS/CdTe; solar cells; energy conversion; efficiency;

    机译：CdS / CdTe;太阳能电池;能量转换效率;

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