A Shah

CX Lin

E Garnett

E Ozbay

H Raether

HA Atwater

HK Raut

HR Stuart

J Zhu

JN Munday

KR Catchpole

KXZ Wang

L Hu

ML Brongersma

PN Saeta

SE Han

VE Ferry

ZF Yu

Scientific Reports

AbstractA new type of light trapping structure utilizing ring-shaped metallic nanocavity arrays is proposed for the absorption enhancement in ultrathin solar cells with few photonic waveguide modes. Dozens of times of broadband absorption enhancement in the spectral range of 700 to 1100 nm is demonstrated in an ultrathin Si3N4/c-Si/Ag prototype solar cell by means of finite-difference time-domain (FDTD) simulation and this dramatic absorption enhancement can be attributed to the excitation of plasmonic cavity modes in these nanocavity arrays. The cavity modes optimally compensate for the lack of resonances in the longer wavelength range for ultrathin solar cells and eventually a maximum Jsc enhancement factor of 2.15 is achieved under AM 1.5G solar illumination. This study opens a new perspective for light management in thin film solar cells and other optoelectronic devices.</jats:p

Wei Wang

Jiasen Zhang

Xiaozhou Che

Guogang Qin

Crossref

Large Absorption Enhancement in Ultrathin Solar Cells Patterned by Metallic Nanocavity Arrays

Large Absorption Enhancement in Ultrathin Solar Cells Patterned by Metallic Nanocavity Arrays

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