Flexible, highly efficient all-polymer solar cells.,Nature Communications

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Flexible, highly efficient all-polymer solar cells.
Nature Communications ( IF 14.7 ) Pub Date : 2015-Oct-09 , DOI: 10.1038/ncomms9547
Taesu Kim _{1,

2} , Jae-Han Kim _{2,

3} , Tae Eui Kang _{1,

2} , Changyeon Lee _{1,

2} , Hyunbum Kang _{1,

2} , Minkwan Shin ₄ , Cheng Wang ₅ , Biwu Ma ₆ , Unyong Jeong ₄ , Taek-Soo Kim _{2,

3} , Bumjoon J Kim _{1,

2}

Affiliation

All-polymer solar cells have shown great potential as flexible and portable power generators. These devices should offer good mechanical endurance with high power-conversion efficiency for viability in commercial applications. In this work, we develop highly efficient and mechanically robust all-polymer solar cells that are based on the PBDTTTPD polymer donor and the P(NDI2HD-T) polymer acceptor. These systems exhibit high power-conversion efficiency of 6.64%. Also, the proposed all-polymer solar cells have even better performance than the control polymer-fullerene devices with phenyl-C61-butyric acid methyl ester (PCBM) as the electron acceptor (6.12%). More importantly, our all-polymer solar cells exhibit dramatically enhanced strength and flexibility compared with polymer/PCBM devices, with 60- and 470-fold improvements in elongation at break and toughness, respectively. The superior mechanical properties of all-polymer solar cells afford greater tolerance to severe deformations than conventional polymer-fullerene solar cells, making them much better candidates for applications in flexible and portable devices.

中文翻译：

灵活、高效的全聚合物太阳能电池。

全聚合物太阳能电池作为灵活的便携式发电机已显示出巨大的潜力。这些器件应提供良好的机械耐久性和高功率转换效率，以实现商业应用的可行性。在这项工作中，我们开发了基于 PBDTTTPD 聚合物供体和 P(NDI2HD-T) 聚合物受体的高效且机械坚固的全聚合物太阳能电池。这些系统的功率转换效率高达 6.64%。此外，所提出的全聚合物太阳能电池比以苯基-C61-丁酸甲酯（PCBM）作为电子受体的对照聚合物富勒烯器件具有更好的性能（6.12%）。更重要的是，与聚合物/PCBM器件相比，我们的全聚合物太阳能电池表现出显着增强的强度和灵活性，断裂伸长率和韧性分别提高了60倍和470倍。与传统的聚合物富勒烯太阳能电池相比，全聚合物太阳能电池具有优异的机械性能，对严重变形具有更大的耐受性，使其更适合在柔性和便携式设备中应用。

更新日期：2015-10-12

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