Artificial light-harvesting n-type porphyrin for panchromatic organic photovoltaic devices,Chemical Science

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Artificial light-harvesting n-type porphyrin for panchromatic organic photovoltaic devices
Chemical Science ( IF 7.6 ) Pub Date : 2017-05-16 00:00:00 , DOI: 10.1039/c7sc01275f
Wisnu Tantyo Hadmojo _{1,

2,

3,

4} , Dajeong Yim _{1,

4,

5,

6} , Havid Aqoma _{1,

2,

3,

4} , Du Yeol Ryu _{1,

4,

5,

6} , Tae Joo Shin _{4,

7,

8,

9,

10} , Hyun Woo Kim _{4,

11,

12,

13} , Eojin Hwang _{1,

4,

5,

6} , Woo-Dong Jang _{1,

4,

5,

6} , In Hwan Jung _{1,

2,

3,

4} , Sung-Yeon Jang _{1,

2,

3,

4}

Affiliation

A near-infrared-harvesting n-type porphyrin-based acceptor for organic photovoltaics (OPVs) was developed. The n-type acceptor, PDI–P_Zn–PDI, was designed by connecting a zinc porphyrin (P_Zn) core to two perylenediimide (PDI) wings through ethyne bridges. A narrow bandgap of 1.27 eV was achieved through the extended π-conjugation and intramolecular charge transfer between the strongly electron-donating P_Zn core and the electron-accepting PDI wings. A bulk heterojunction (BHJ) structured photovoltaic device fabricated from PDI–P_Zn–PDI with PTB7-Th exhibited panchromatic photon-to-current conversion from 350 to 900 nm. A power conversion efficiency of 5.25% with a remarkably low E_loss of 0.54 eV was achieved by optimizing the nanomorphology of the BHJ films by adding pyridine and by controlling the ZnO/BHJ interfacial properties.

中文翻译：

用于全色有机光伏器件的人工集光n型卟啉

开发了一种用于有机光伏的近红外n型卟啉受体。n型受体PDI-P _Zn -PDI通过乙炔桥将卟啉锌（P _Zn）核与两个per二酰亚胺（PDI）翼相连而设计。通过在强给电子的P _Zn核与电子接受的PDI侧翼之间扩展的π共轭和分子内电荷转移，实现了1.27 eV的窄带隙。由具有PTB7-Th的PDI-P _Zn -PDI制造的体异质结（BHJ）结构的光伏器件显示了从350到900 nm的全色光子到电流的转换。功率转换效率为5.25％，E_损耗极低通过添加吡啶并控制ZnO / BHJ界面性能来优化BHJ膜的纳米形貌，可实现0.54 eV的电导率。

更新日期：2017-05-31

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