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首页> 外文期刊>Energy & environmental science >Open circuit voltage of organic solar cells: an in-depth review
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Open circuit voltage of organic solar cells: an in-depth review

机译：有机太阳能电池的开路电压：深入综述

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摘要

Organic solar cells (OSCs) have developed progressively in efficiency over the last two decades. Though it is promising, this technology is still far from realizing its full prospect. One of the most important parameters that determine the efficiency of OSCs is the open-circuit voltage (V-OC), which represents the maximum voltage a solar cell can provide to an external circuit. Light harvesting materials employed in OSCs have an optical band gap of around 1.7 to 2.1 eV and yet the V-OC barely exceeds 1.0 V, which is approximately just half of the photon's original energy. By contrast, in inorganic counterparts such as Si, CIGS and GaAs, the difference is only 0.3 to 0.45 eV between the material bandgap and V-OC. Hence, to achieve higher power conversion efficiencies (PCEs) in OSCs, a detailed understanding of the origins of V-OC and the associated energetic loss mechanisms is indispensable. The presented review takes the opportunity to elaborate various governing mechanisms and factors affecting the V-OC from a comprehensive yet insightful standpoint. This report also provides a concise synthesis of intricate interdependencies among the factors influencing V-OC and highlights the potential research strategies to improve V-OC, rendering possible pathways to facilitate the viable commercialization of OSCs.
机译：在过去的二十年中，有机太阳能电池（OSC）的效率逐步提高。尽管前景广阔，但这项技术仍远未实现其完整的前景。决定OSC效率的最重要参数之一是开路电压（V-OC），它表示太阳能电池可提供给外部电路的最大电压。 OSC中使用的光收集材料的光学带隙大约为1.7至2.1 eV，但V-OC几乎不超过1.0 V，大约仅为光子原始能量的一半。相比之下，在无机对应物（如Si，CIGS和GaAs）中，材料带隙与V-OC之间的差异仅为0.3至0.45 eV。因此，为了在OSC中实现更高的功率转换效率（PCE），对V-OC的起源和相关的能量损耗机制的详细了解是必不可少的。提出的评论借此机会从全面而有见地的角度阐述影响V-OC的各种治理机制和因素。该报告还简要总结了影响V-OC的因素之间复杂的相互依赖性，并重点介绍了改善V-OC的潜在研究策略，为促进OSC的可行商业化提供了可能的途径。

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  • 来源
    《Energy & environmental science》 |2016年第2期|391-410|共20页
  • 作者

    Elumalai Naveen Kumar; Uddin Ashraf;

  • 作者单位

    Univ New S Wales, Sch Photovolta & Renewable Energy Engn, Sydney, NSW 2052, Australia;

    Univ New S Wales, Sch Photovolta & Renewable Energy Engn, Sydney, NSW 2052, Australia;

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