Critical analysis on the quality of stability studies of perovskite and dye solar cells†,Energy & Environmental Science

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Critical analysis on the quality of stability studies of perovskite and dye solar cells†
Energy & Environmental Science ( IF 32.4 ) Pub Date : 2018-02-05 00:00:00 , DOI: 10.1039/c7ee02670f
Armi Tiihonen _{1,

2,

3,

4,

5} , Kati Miettunen _{1,

2,

3,

4,

5} , Janne Halme _{1,

2,

3,

4,

5} , Sakari Lepikko _{1,

2,

3,

4,

5} , Aapo Poskela _{1,

2,

3,

4,

5} , Peter D. Lund _{1,

2,

3,

4,

5}

Affiliation

The success of perovskite and dye-sensitized solar cells will depend on their stability over the whole life-time. Aging tests are of utmost importance to identify deficiencies and to suggest cell improvements. Here we analyzed the quality of 261 recent aging tests and found serious shortcomings in current practices. For example, in about 50% of the studies only one sample was considered, meaning that the sample size was too small for statistical significance. We propose a new procedure for aging tests based on careful planning and scientific reporting. This includes estimating the required sample size for an aging test and avoiding so-called nuisance factors, i.e. unintended variations always present in real world testing. The improved procedure can provide more reliable information on stability and lifetime, which could contribute to better understanding of degradation mechanisms important for improving these photovoltaic technologies.

中文翻译：

钙钛矿和染料太阳能电池稳定性研究质量的批判分析†

钙钛矿和染料敏化太阳能电池的成功将取决于它们在整个生命周期中的稳定性。老化测试对于识别缺陷和建议改善细胞至关重要。在这里，我们分析了261个最近的老化测试的质量，并发现了当前实践中的严重缺陷。例如，在大约50％的研究中，仅考虑了一个样本，这意味着样本大小对于统计学意义而言太小。我们基于精心计划和科学报告，提出了一种新的老化测试程序。这包括估算老化测试所需的样本量，并避免所谓的干扰因素，即在现实世界的测试中总是会出现意想不到的变化。改进的过程可以提供有关稳定性和寿命的更可靠的信息，这有助于更好地理解对于改善这些光伏技术至关重要的降解机理。

更新日期：2018-02-05

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