Improved photovoltaic properties of copolymer donors by regulating alkyl and alkylsilyl side chains
Improved photovoltaic properties of copolymer donors by regulating alkyl and alkylsilyl side chains
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通过调节烷基和烷基甲硅烷基侧链改善共聚物供体的光伏性能
DOI：
10.1016/j.dyepig.2021.109842
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发表时间：
2022-01
影响因子：
4.5
通讯作者：
Songting Tan
中科院分区：
文献类型：
--
作者：
Wenjing Xu;Miao Zi;Min Zhang;Ruofei Hao;Ping Shen;Bin Zhao;Songting Tan
通过改变给体单元中烷基和三丙基硅侧链的比例，合成了PBT 1、PBT 10 Si、PBT 20 Si、PBT 30 Si和PBDB-Si等一系列共聚物给体材料，并将其应用于聚合物太阳能电池（PSCs）。所有的共聚物表现出互补的吸收光谱和匹配的小分子受体Y 6的能级。掠入射广角X射线散射（GIWAXS）测量表明，所有的共聚物纯膜和共混物膜显示出不同的正面取向。而基于PBT 20 Si：Y 6的共混膜表现出适当的相分离和较少的双分子复合，有利于激子的有效衰变和电荷转移。结果，PBT 20 Si基器件表现出4.99 × 10− 4cm 2 V − 1 s −1的相对较高的空穴迁移率（μh）值，并获得13.06%的最高功率转换效率（PCE）。这些结果表明，在聚合物给体中适度引入三丙基硅侧链可以改善光活性层的分子聚集，抑制双分子复合，是一种值得进一步研究的提高器件性能的有效策略。
By changing the ratio of alkyl and tripropylsilyl side chain of the donor unit, a series of copolymer donor materials, named PBT1, PBT10Si, PBT20Si, PBT30Si and PBDB-Si, are synthesized and applied in polymer solar cells (PSCs). All copolymers exhibit complementary absorption spectra and matched energy levels with small molecular acceptor Y6. Grazing incidence wide angle X-ray scattering (GIWAXS) measurements demonstrate that all copolymer pure films and blend films show distinct face-on orientations. Whereas, the blend film based on PBT20Si:Y6 manifests appropriate phase separation and less bimolecular recombination, which is in favor of effective exciton disintegration and charge transfer. As a result, the PBT20Si-based device exhibits a relatively high hole mobility (μh) value of 4.99 × 10−4cm2V−1s−1, and obtains the highest power conversion efficiency (PCE) of 13.06%. These results indicate that the moderate introduction of tripropylsilyl side chains into polymer donors can improve the molecular aggregation and suppress bimolecular recombination of the photoactive layer, which is an effective strategy worthy of further research to promote the device performances.
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无添加剂%20非富勒烯%20有机%20太阳能%20细胞%20with%20随机%20共聚物%20as%20供体%20over%209%%20power%20conversion%20效率
影响因子：
9.1
作者：
Wu Meimei;Shi Laitao;Hu Yu;Chen Lie;Hu Ting;Zhang Youdi;Yuan Zhongyi;Chen Yiwang
通讯作者：
Chen Yiwang
影响因子：
4.6
作者：
Xiaopeng Xu;Kai Li;Zuojia Li;Ying Li;Zhenguo Wang;Q. Peng
通讯作者：
Xiaopeng Xu;Kai Li;Zuojia Li;Ying Li;Zhenguo Wang;Q. Peng
影响因子：
2.8
作者：
J. Ohshita;Masayuki Miyazaki;Fei-Bao Zhang;Daiki Tanaka;Morihara Yasushi
通讯作者：
J. Ohshita;Masayuki Miyazaki;Fei-Bao Zhang;Daiki Tanaka;Morihara Yasushi
影响因子：
27.8
作者：
Yao, Huatong;Li, Yunke;Yan, He
通讯作者：
Yan, He
DOI：
10.1002/pola.24779
发表时间：
2011-08
期刊：
Journal of Polymer Science Part A
影响因子：
--
作者：
Harihara Padhy;Duryodhan Sahu;Dhananjaya Patra;M. Pola;Jen-Hsien Huang;C. Chu;K. Wei;Hong‐Cheu Lin
通讯作者：
Harihara Padhy;Duryodhan Sahu;Dhananjaya Patra;M. Pola;Jen-Hsien Huang;C. Chu;K. Wei;Hong‐Cheu Lin