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Area-scaling of organic solar cells

机译：有机太阳能电池的面积缩放

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摘要

We report on the performance of organic solar cells based on pentacene/C_(60) heterojunctions as a function of active area. Devices with areas of 0.13 and 7 cm~2 were fabricated on indium-tin-oxide (ITO) coated glass. Degradation of the performance with increased area is observed and analyzed in terms of the power loss density concept. The various power loss contributions to the total series resistance (R_SA) are measured independently and compared to the values of the series resistance extracted from the current-voltage characteristics using a Shockley equivalent circuit model. The limited sheet resistance of ITO is found to be one of the major limiting factors when the area of the cell is increased. To reduce the effects of series resistance, thick, electroplated, metal grid electrodes were integrated with ITO in large-area cells. The metal grids were fabricated directly onto ITO and passivated with an insulator to prevent electrical shorts during the deposition of the top Al electrode. By integrating metal grids onto ITO, the series resistance could be reduced significantly yielding improved performance. Design guidelines for metal grids are described and tradeoffs are discussed.
机译：我们报告了基于并五苯/ C_（60）异质结的有机太阳能电池的性能与活性面积的关系。在涂有氧化铟锡（ITO）的玻璃上制造面积为0.13和7 cm〜2的器件。根据功率损耗密度的概念，观察并分析了随面积增加而导致的性能下降。独立测量各种功率损耗对总串联电阻（R_SA）的影响，并使用Shockley等效电路模型将其与从电流-电压特性中提取的串联电阻值进行比较。当增加电池的面积时，发现ITO的有限的薄层电阻是主要的限制因素之一。为了减少串联电阻的影响，在大面积电池中将厚的电镀金属栅电极与ITO集成在一起。金属栅直接在ITO上制造，并用绝缘体钝化，以防止在顶部Al电极沉积过程中发生电短路。通过将金属栅格集成到ITO上，可以大大降低串联电阻，从而提高性能。描述了金属网格的设计准则，并讨论了权衡问题。

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  • 来源
    《Journal of Applied Physics》 |2009年第5期|054507.1-054507.10|共10页
  • 作者

    Seungkeun Choi; William J. Potscavage Jr.; Bernard Kippelen;

  • 作者单位

    Center for Organic Photonics and Electronics (COPE) and School of Electrical and Computer Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, USA;

    Center for Organic Photonics and Electronics (COPE) and School of Electrical and Computer Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, USA;

    Center for Organic Photonics and Electronics (COPE) and School of Electrical and Computer Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, USA;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
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