Tests on organic photovoltaics (OPV) mini modules, fabricated through a R2R process, in air and without hazardous solvents have been conducted in order to compare their outdoor performance, in Belo Horizonte, Brazil, and Bangor, North Wales, and assess the impact of the latitude and climate of the installation on the power generation and modules' lifetime. The test showed different profiles of degradation for each region and formulation, with a surprisingly faster degradation in Bangor. One of the possible sources of the increased degradation is the greater levels of condensation observed in Bangor. To verify the impact of condensation on the module stability, indoor tests have been conducted to relate the dew point depression to module degradation times. The results show that condensation is a significant stress factor in OPV and should be considered more prominently in reliability studies.

中文翻译：

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有机光伏在两个不同位置的户外性能：降解和冷凝效果的比较

已经在巴西贝洛奥里藏特和北威尔士班戈对通过 R2R 工艺制造的有机光伏 (OPV) 微型模块在空气中且不含有害溶剂的情况下进行了测试，以比较它们的户外性能，并评估其影响安装的纬度和气候对发电和模块寿命的影响。测试显示每个区域和配方的降解情况不同，班戈的降解速度惊人地快。退化增加的可能来源之一是在班戈观察到的更大程度的冷凝。为了验证冷凝对模块稳定性的影响，进行了室内测试以将露点降低与模块退化时间联系起来。