Heterojunction Hybrid Solar Cells by Formation of Conformal Contacts between PEDOT:PSS and Periodic Silicon Nanopyramid Arrays

Small
Xixi WangJichun Ye

Abstract

Surface nanotexturing with excellent light-trapping property is expected to significantly increase the conversion efficiency of solar cells. However, limited by the serious surface recombination arising from the greatly enlarged surface area, the silicon (Si) nanotexturing-based solar cells cannot yet achieve satisfactory high efficiency, which is more prominent in organic/Si hybrid solar cells (HSCs) where a uniform polymer layer can rarely be conformably coated on nanotextured substrate. Here, the HSCs featuring advanced surface texture of periodic upright nanopyramid (UNP) arrays and hole-conductive conjugated polymers, poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS), are investigated. The tetramethylammonium hydroxide etching is used to smooth the surface morphologies of the Si-UNPs, leading to reduced surface defect states. The uniform Si-UNPs together with silane chemical-incorporated PEDOT:PSS solution enable the simultaneous realization of excellent broadband light absorption as well as enhanced electrical contact between the textured Si and the conducting polymer. The resulting PEDOT:PSS/Si HSCs textured with UNP arrays show a promising power conversion efficiency of 13.8%, significantly higher than...Continue Reading

References

Jan 30, 2010·Nano Letters·Erik Garnett, Peidong Yang
Nov 1, 2011·Journal of the American Chemical Society·Xiaojuan ShenShuit-Tong Lee
Nov 24, 2011·Advanced Materials·Sushobhan AvasthiJames C Sturm
May 2, 2012·Nano Letters·Sangmoo JeongYi Cui
Sep 17, 2013·ACS Applied Materials & Interfaces·Pushpa Raj PudasainiArturo A Ayon
Dec 25, 2015·ACS Applied Materials & Interfaces·Lixia YangXiaolong Du
Jul 15, 2016·Optics Express·Yingfeng LiMeicheng Li

❮ Previous
Next ❯

Related Concepts

Related Feeds

Blood And Marrow Transplantation

The use of hematopoietic stem cell transplantation or blood and marrow transplantation (bmt) is on the increase worldwide. BMT is used to replace damaged or destroyed bone marrow with healthy bone marrow stem cells. Here is the latest research on bone and marrow transplantation.