title: Well-Controlled Dielectric Nanomeshes by Colloidal Nanosphere Lithography for Optoelectronic Enhancement of Ultrathin Cu(In,Ga)Se2Solar Cells.
abstract: Ultrathin Cu(In,Ga)Se2(CIGSe) solar cells pose challenges of incomplete absorption and back contact recombination. In this work, we applied the simple collodial nanosphere lithography and fabricated 2D SiO2nanomeshes (NMs), which simultaneously benefit ultrathin CIGSe solar cells electrically and optically. Electrically, the NMs are capable of passivating the back contact recombination and increasing the minimum bandgap of absorbers. Optically, the parasitic absorption in Mo as a main optical loss is reduced. Consequently, the SiO2NMs give rise to an increase of 3.5 mA/cm2in short circuit current density (Jsc) and of 57 mV in open circuit voltage increase (Voc), leading to an absolute efficiency enhancement as high as 2.6% (relatively 30%) for CIGSe solar cells with an absorber thickness of only 370 nm and a steep back Ga/[Ga + In] grading.
authors: Nanooptische Konzepte für die PV, Helmholtz-Zentrum Berlin für Materialien und Energie GmbH , Hahn-Meitner Platz 1, 14109 Berlin, Germany.
authors: Guanchao
authors: G
authors: Yin
authors: Nanooptische Konzepte für die PV, Helmholtz-Zentrum Berlin für Materialien und Energie GmbH , Hahn-Meitner Platz 1, 14109 Berlin, Germany.|Freie Universität Berlin , Fachbereich Physik, Arnimallee 14, 14195 Berlin, Germany.
authors: Min
authors: M
authors: Song
authors: Nanooptische Konzepte für die PV, Helmholtz-Zentrum Berlin für Materialien und Energie GmbH , Hahn-Meitner Platz 1, 14109 Berlin, Germany.
authors: Shengkai
authors: S
authors: Duan
authors: Nanooptische Konzepte für die PV, Helmholtz-Zentrum Berlin für Materialien und Energie GmbH , Hahn-Meitner Platz 1, 14109 Berlin, Germany.
authors: Phillip
authors: P
authors: Manley
authors: PVcomB, Helmholtz-Zentrum Berlin für Materialien und Energie , Schwarzschildstraße 3, 12489 Berlin, Germany.
authors: Dieter
authors: D
authors: Greiner
authors: PVcomB, Helmholtz-Zentrum Berlin für Materialien und Energie , Schwarzschildstraße 3, 12489 Berlin, Germany.
authors: Christian A
authors: CA
authors: Kaufmann
authors: Nanooptische Konzepte für die PV, Helmholtz-Zentrum Berlin für Materialien und Energie GmbH , Hahn-Meitner Platz 1, 14109 Berlin, Germany.|Freie Universität Berlin , Fachbereich Physik, Arnimallee 14, 14195 Berlin, Germany.
authors: Martina
authors: M
authors: Schmid
keywords: SiO2 nanomesh; absorption enhancement; back contact passivation; nanosphere lithography method; optoelectronic enhancement; ultrathin CIGSe solar cells