Design of Donor Polymers with Strong Temperature-Dependent Aggregation Property for Efficient Organic Photovoltaics,Accounts of Chemical Research

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Design of Donor Polymers with Strong Temperature-Dependent Aggregation Property for Efficient Organic Photovoltaics
Accounts of Chemical Research ( IF 16.4 ) Pub Date : 2017-09-15 00:00:00 , DOI: 10.1021/acs.accounts.7b00293
Huawei Hu ₁ , Philip C. Y. Chow ₁ , Guangye Zhang ₁ , Tingxuan Ma ₁ , Jing Liu ₁ , Guofang Yang ₁ , He Yan _{1,

2}

Affiliation

Bulk heterojunction (BHJ) organic solar cells (OSCs) have attracted intensive research attention over the past two decades owing to their unique advantages including mechanical flexibility, light weight, large area, and low-cost fabrications. To date, OSC devices have achieved power conversion efficiencies (PCEs) exceeding 12%. Much of the progress was enabled by the development of high-performance donor polymers with favorable morphological, electronic, and optical properties. A key problem in morphology control of OSCs is the trade-off between achieving small domain size and high polymer crystallinity, which is especially important for the realization of efficient thick-film devices with high fill factors. For example, the thickness of OSC blends containing state-of-the-art PTB7 family donor polymers are restricted to ∼100 nm due to their relatively low hole mobility and impure polymer domains. To further improve the device performance and promote commercialization of OSCs, there is a strong demand for the design of new donor polymers that can achieve an optimal blend morphology containing highly crystalline yet reasonably small domains.

中文翻译：

具有强温度依赖性聚集特性的高效有机光伏供体聚合物的设计

块状异质结（BHJ）有机太阳能电池（OSC）由于其独特的优势（包括机械柔韧性，重量轻，面积大和制造成本低廉）而在过去的二十年中引起了广泛的研究关注。迄今为止，OSC设备已实现超过12％的功率转换效率（PCE）。通过开发具有良好形态，电子和光学性质的高性能供体聚合物，可以取得很大的进步。OSC的形态控制中的关键问题是在实现小域尺寸和高聚合物结晶度之间的权衡，这对于实现具有高填充因子的高效厚膜器件尤为重要。例如，由于其相对较低的空穴迁移率和不纯的聚合物结构域，包含最先进的PTB7族供体聚合物的OSC共混物的厚度被限制在约100 nm。为了进一步改善器件性能并促进OSC的商业化，强烈需要设计新的供体聚合物，以实现具有高结晶度但合理的小畴的最佳共混物形态。

更新日期：2017-09-15

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