Lifetime of Organic Salt Photovoltaics,Advanced Energy Materials

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Lifetime of Organic Salt Photovoltaics
Advanced Energy Materials ( IF 24.4 ) Pub Date : 2018-04-20 , DOI: 10.1002/aenm.201703678
Christopher J. Traverse ₁ , Pei Chen ₁ , Richard R. Lunt _{1,

2}

Affiliation

Solar energy deployment can be augmented with the use of wavelength‐selective transparent photovoltaics (PVs). Moving forward, operating lifetime is arguably among the most important challenge that must be addressed to increase commercial viability of these emerging technologies. In this work, the lifetimes of PVs with organic near‐infrared selective small molecules and molecular salts are investigated. This is the first comprehensive lifetime study on devices featuring organic salts with varied counterions. Based on the tunability afforded by anion exchange, an extrapolated lifetime of 7 ± 2 years from continuous illumination measurements on organic salt devices held at the maximum power point is demonstrated. These lifetimes are compared with changes in external quantum efficiency, hydrophobicity, molecular orbital levels, and optical absorption to determine the limiting characteristics and failure mechanisms of PV devices utilizing each donor. A key correlation between the lifetime and the hydrophobicity of the donor layer is uncovered. This could provide a targeted parameter for designing organic molecules and salts with exceptional lifetime and enhanced commercial viability.

中文翻译：

有机盐光伏的使用寿命

可以通过使用波长选择性透明光伏（PV）来增强太阳能的部署。展望未来，使用寿命可以说是增加这些新兴技术在商业上的可行性所必须解决的最重要的挑战。在这项工作中，研究了具有有机近红外选择性小分子和分子盐的PV的寿命。这是首次针对具有各种抗衡离子有机盐的设备进行全面的寿命研究。根据阴离子交换提供的可调性，证明了在保持最大功率点的有机盐装置上进行连续照明测量得出的7±2年的推断寿命。将这些寿命与外部量子效率，疏水性，分子轨道水平，和光吸收来确定利用每个供体的光伏器件的极限特性和失效机理。未发现供体层的寿命和疏水性之间的关键相关性。这可以为设计有机分子和盐提供出色的寿命和增强的商业可行性的目标参数。

更新日期：2018-04-20

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