国霞副教授与张茂杰教授合作在J. Mater. Chem. A 上发表研究论文

Bing Guo ^a,   Xia Guo*^a（国霞）,   Wanbin Li ^a,   Xiangyi Meng ^b ,  Wei Ma ^b,   Maojie Zhang*^a （张茂杰）and   Yongfang Li^ac 

 ^a Laboratory of Advanced Optoelectronic Materials, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, P. R. China

^b State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, Xi'an 710049, P. R. China

^c Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China

J. Mater. Chem. A, 2016,4, 13251-13258

We synthesized a wide-bandgap conjugated polymer (named PTZ1) based on thienyl-substituted benzodithiophene as the donor unit and thiazolothiazole as the acceptor unit for photovoltaic applications. The polymer exhibits a desirable broad bandgap of 1.97 eV with the maximum absorption edge of 630 nm, a deep highest occupied molecular orbital (HOMO) energy level of −5.31 eV and a relatively high hole mobility of 3.86 × 10⁻³ cm² V⁻¹ s⁻¹. Consequently, single junction PSCs based on PTZ1 exhibit outstanding performance with a PCE of 7.7% and a high V_oc of 0.94 V, which are among the highest values for PSCs based on conjugated polymers with a broad bandgap near to 2.0 eV. The excellent performance is attributed to the high polymer crystallinity, favorable backbone orientation and continuous interpenetrating network in blend films. The tandem PSCs based on PTZ1 as the donor material in the front cell exhibited a high PCE of 10.3% with a V_oc of 1.65 V.

链接：http://pubs.rsc.org/en/Content/ArticleLanding/2016/TA/c6ta04950h#!divAbstract