Influence of Acid-Doped Poly(ethylene imine) Interlayers on the Performance of Polymer:Nonfullerene Solar Cells,Macromolecular Rapid Communications

当前位置： X-MOL 学术 › Macromol. Rapid Commun. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Influence of Acid-Doped Poly(ethylene imine) Interlayers on the Performance of Polymer:Nonfullerene Solar Cells
Macromolecular Rapid Communications ( IF 4.2 ) Pub Date : 2022-10-12 , DOI: 10.1002/marc.202200264
Woongki Lee ₁ , Chulyeon Lee _{1,

2} , Hwajeong Kim _{1,

3} , Youngkyoo Kim ₁

Affiliation

This work reports that ultrathin polymeric films doped with organic acid molecules can act as an electron-transporting interfacial layer in polymer:nonfullerene solar cells. The polymeric interfacial layers, which consist of poly(ethylene imine) (PEI) doped with 3-hydroxypropane-1-sulfonic acid (HPSA) at various HPSA molar ratios, are introduced between transparent indium-tin oxide (ITO) electrodes and polymer:nonfullerene bulk heterojunction layers. The HPSA-doped PEI (PEI:HPSA) films are optically translucent in the wavelength range of ≈300–800 nm, while the acidity of PEI solutions reached ≈pH = 7 at HPSA = 30 mol%. The power conversion efficiency of solar cells is improved by doping 20 mol% HPSA due to the increased short circuit current density without open circuit voltage reduction. The improvement in solar cell performances is attributed to an adequate control of HPSA doping ratios, which spares undoped amine units of PEI for making sufficient net dipole layers with ITO surfaces and makes permanent charges for high electrical conductivity in the layers. The surface morphology and doped states are characterized with atomic force microscopy and X-ray photoelectron spectroscopy.

中文翻译：

酸掺杂聚（乙烯亚胺）夹层对聚合物：非富勒烯太阳能电池性能的影响

这项工作报告说，掺杂有有机酸分子的超薄聚合物薄膜可以作为聚合物：非富勒烯太阳能电池中的电子传输界面层。聚合物界面层由以各种 HPSA 摩尔比掺杂 3-羟基丙烷-1-磺酸 (HPSA) 的聚（乙烯亚胺）(PEI) 组成，被引入透明的氧化铟锡 (ITO) 电极和聚合物之间：非富勒烯本体异质结层。HPSA 掺杂的 PEI (PEI:HPSA) 薄膜在 ≈300–800 nm 的波长范围内是光学半透明的，而当 HPSA = 30 mol% 时，PEI 溶液的酸度达到 ≈ pH = 7。由于在不降低开路电压的情况下增加了短路电流密度，因此通过掺杂 20 mol% HPSA 提高了太阳能电池的功率转换效率。太阳能电池性能的提高归因于对 HPSA 掺杂比的适当控制，这可以节省 PEI 的未掺杂胺单元，以在 ITO 表面制造足够的净偶极子层，并在层中产生永久电荷以实现高导电性。表面形态和掺杂状态用原子力显微镜和 X 射线光电子能谱表征。

更新日期：2022-10-12

点击分享查看原文

点击收藏

阅读更多本刊最新论文本刊介绍/投稿指南11