• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>RSC Advances >Donor–acceptor polymers containing thiazole-fused benzothiadiazole acceptor units for organic solar cells
【24h】

Donor–acceptor polymers containing thiazole-fused benzothiadiazole acceptor units for organic solar cells

机译：含有噻唑稠合的苯并噻二唑受体单元的供体-受体聚合物，用于有机太阳能电池

获取原文
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Two p-type semiconducting donor–acceptor polymers were designed and synthesized for use in organic solar cells. The polymers combine a benzodithiophene (BDT) donor and a thiazole-fused benzothiadiazole (TzBT) acceptor. Two TzBT acceptor units are compared, one with an alkylthio group ( P1 ) and the other with a more strongly electron-withdrawing alkylsulfonyl group ( P2 ) at the fused thiazole ring. The strongly electron-accepting nature of the TzBT unit lowers the lowest unoccupied molecular orbital (LUMO) energy of P1 and P2 relative to that of the BT analog ( PBDT-BT ), without altering the energy of the highest occupied molecular orbital (HOMO). Despite the smaller optical band gaps, bulk heterojunction organic solar cells fabricated using these polymers in a PC _(71) BM blend showed high open-circuit voltages. The power conversion efficiency (PCE) of the P1 -based device reached 6.13%. Though efficiency of the P2 -based device was lower, photoelectric conversion extended into the near-IR region up to 950 nm.
机译：设计并合成了两种用于有机太阳能电池的p型半导体供体-受体聚合物。该聚合物结合了苯并二噻吩（BDT）供体和噻唑稠合的苯并噻二唑（TzBT）受体。比较了两个TzBT受体单元，一个在稠合的噻唑环上具有烷硫基（P1），另一个具有更强的吸电子烷基磺酰基（P2）。相对于BT类似物（PBDT-BT）而言，TzBT单元的强电子接受性质降低了P1和P2的最低未占据分子轨道（LUMO）能量，而不会改变最高占据分子轨道（HOMO）的能量。尽管光学带隙较小，但使用这些聚合物在PC_（71）BM共混物中制备的块状异质结有机太阳能电池仍显示出高开路电压。基于P1的设备的功率转换效率（PCE）达到6.13％。尽管基于P2的器件的效率较低，但是光电转换扩展到了近950 nm的近红外区域。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号