Embedded Metal Electrode for Organic-Inorganic Hybrid Nanowire Solar Cells

ACS Nano
Han-Don UmKwanyong Seo

Abstract

We demonstrate here an embedded metal electrode for highly efficient organic-inorganic hybrid nanowire solar cells. The electrode proposed here is an effective alternative to the conventional bus and finger electrode which leads to a localized short circuit at a direct Si/metal contact and has a poor collection efficiency due to a nonoptimized electrode design. In our design, a Ag/SiO2 electrode is embedded into a Si substrate while being positioned between Si nanowire arrays underneath poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS), facilitating suppressed recombination at the Si/Ag interface and notable improvements in the fabrication reproducibility. With an optimized microgrid electrode, our 1 cm2 hybrid solar cells exhibit a power conversion efficiency of up to 16.1% with an open-circuit voltage of 607 mV and a short circuit current density of 34.0 mA/cm2. This power conversion efficiency is more than twice as high as that of solar cells using a conventional electrode (8.0%). The microgrid electrode significantly minimizes the optical and electrical losses. This reproducibly yields a superior quantum efficiency of 99% at the main solar spectrum wavelength of 600 nm. In particular, our solar cells exhib...Continue Reading

References

Jul 9, 2009·Nano Letters·Eugenii U Donev, J Todd Hastings
Dec 18, 2010·Optics Express·Jin-Young JungJung-Ho Lee
Nov 1, 2011·Journal of the American Chemical Society·Xiaojuan ShenShuit-Tong Lee
May 2, 2012·Nano Letters·Sangmoo JeongYi Cui
Jul 8, 2014·Nano Letters·Dhiraj Sinha, Ji Ung Lee
Apr 20, 2016·ACS Applied Materials & Interfaces·Namwoo KimKwanyong Seo
May 25, 2016·ACS Applied Materials & Interfaces·Yimao WanAndres Cuevas
Oct 12, 2016·Scientific Reports·Xisheng ZhangShengzhong Frank Liu

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Citations

Aug 14, 2019·Advanced Science·Larysa BarabanGianaurelio Cuniberti
Dec 17, 2019·Angewandte Chemie·Zhe SunChangduk Yang
Feb 15, 2020·ACS Applied Materials & Interfaces·Joseph P ThomasKam Tong Leung

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