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Inorganic CuFeO2 Delafossite Nanoparticles as Effective Hole Transport Materials for Highly Efficient and Long-Term Stable Perovskite Solar Cells.
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2019-11-21 , DOI: 10.1021/acsami.9b14740 Seckin Akin 1 , Faranak Sadegh 2 , Servet Turan 1 , Savas Sonmezoglu
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2019-11-21 , DOI: 10.1021/acsami.9b14740 Seckin Akin 1 , Faranak Sadegh 2 , Servet Turan 1 , Savas Sonmezoglu
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The regular architecture (n-i-p) of perovskite solar cells (PSCs) has attracted increasing interest in the renewable energy field, owing to high certified efficiencies in the recent years. However, there are still serious obstacles of PSCs associated with spiro-OMeTAD hole transport material (HTM), such as (i) prohibitively expensive material cost (∼150-500 $/g) and (ii) operational instability at elevated temperatures and high humidity levels. Herein, we have reported the highly photo, thermal, and moisture-stable and cost-effective PSCs employing inorganic CuFeO2 delafossite nanoparticles as a HTM layer, for the first time. By exhibiting superior hole mobility and additive-free nature, the best-performing cell achieved a power conversion efficiency (PCE) of 15.6% with a negligible hysteresis. Despite exhibiting a lower PCE as compared to the spiro-OMeTAD-based control cell (19.1%), nonencapsulated CuFeO2-based cells maintained above 85% of their initial efficiency, while the PCE of control cells dropped to ∼10% under continuous illumination at maximum power point tracking after 1000 h. More importantly, the performance of control cells was quickly degraded at above 70 °C, whereas CuFeO2-based cells, retaining ∼80% of their initial efficiency after 200 h, were highly stable even at 85 °C in ambient air under dark conditions. Besides showing significant improvement in stability against light soaking and thermal stress, CuFeO2-based cells exhibited superior shelf stability even at 80 ± 5% relative humidity and retained over 90% of their initial PCE. Overall, we strongly believe that this study highlights the potential of inorganic HTMs for the commercial deployment of long-term stable and low-cost PSCs.
中文翻译：
无机CuFeO2铜铁矿纳米粒子作为高效，长期稳定的钙钛矿太阳能电池的有效空穴传输材料。
由于近年来的高认证效率，钙钛矿太阳能电池（PSC）的常规体系结构（nip）引起了人们对可再生能源领域日益增长的兴趣。但是，与螺旋OMeTAD空穴传输材料（HTM）相关的PSC仍然存在严重障碍，例如（i）昂贵的材料成本（约150-500美元/ g）和（ii）在高温和高温下的操作不稳定湿度水平。本文中，我们首次报道了采用无机CuFeO2铜铁矿纳米颗粒作为HTM层的高光，热和湿气稳定且具有成本效益的PSC。通过表现出优异的空穴迁移率和无添加剂性质，性能最佳的电池实现了15.6％的功率转换效率（PCE），而滞后作用却可以忽略不计。尽管与基于螺旋OMeTAD的对照细胞相比，PCE较低（19.1％），但未封装的基于CuFeO2的细胞仍保持其初始效率的85％以上，而在连续光照下，对照细胞的PCE降至约10％。 1000小时后跟踪最大功率点。更重要的是，对照电池的性能在高于70°C时迅速退化，而基于CuFeO2的电池在200 h后仍保持约80％的初始效率，即使在黑暗环境下于85°C在环境空气中也高度稳定。基于CuFeO2的电池除了在抗光浸泡和热应力方面显示出显着的稳定性提高外，甚至在80±5％相对湿度下也表现出优异的保存稳定性，并保留了其初始PCE的90％以上。全面的，
更新日期：2019-11-21
中文翻译：
无机CuFeO2铜铁矿纳米粒子作为高效，长期稳定的钙钛矿太阳能电池的有效空穴传输材料。
由于近年来的高认证效率，钙钛矿太阳能电池（PSC）的常规体系结构（nip）引起了人们对可再生能源领域日益增长的兴趣。但是，与螺旋OMeTAD空穴传输材料（HTM）相关的PSC仍然存在严重障碍，例如（i）昂贵的材料成本（约150-500美元/ g）和（ii）在高温和高温下的操作不稳定湿度水平。本文中，我们首次报道了采用无机CuFeO2铜铁矿纳米颗粒作为HTM层的高光，热和湿气稳定且具有成本效益的PSC。通过表现出优异的空穴迁移率和无添加剂性质，性能最佳的电池实现了15.6％的功率转换效率（PCE），而滞后作用却可以忽略不计。尽管与基于螺旋OMeTAD的对照细胞相比，PCE较低（19.1％），但未封装的基于CuFeO2的细胞仍保持其初始效率的85％以上，而在连续光照下，对照细胞的PCE降至约10％。 1000小时后跟踪最大功率点。更重要的是，对照电池的性能在高于70°C时迅速退化，而基于CuFeO2的电池在200 h后仍保持约80％的初始效率，即使在黑暗环境下于85°C在环境空气中也高度稳定。基于CuFeO2的电池除了在抗光浸泡和热应力方面显示出显着的稳定性提高外，甚至在80±5％相对湿度下也表现出优异的保存稳定性，并保留了其初始PCE的90％以上。全面的，
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