Abstract

We have investigated the antireflection and light trapping properties of two-dimensional grating arrays in the hexagonal symmetry with various texture morphologies. Optical simulation based on finite-difference time-domain (FDTD) analysis is carried out to understand the role of the structure profile for different periodicities and heights to achieve enhanced light trapping. The considered active medium of interest is 200-nm-thick hydrogenated amorphous silicon. Although the considered texture profiles possess an incremental change of refractive index from incident medium to active medium, a parabolic-shaped front side texture provides better antireflection effects owing to its high diffraction efficiencies in the higher-order modes as compared to other pattern morphologies. In the back side texture, the parabolic-shaped pattern also dominates with better light trapping efficiencies due to its ability to distribute a major amount of diffracted energy in the higher-order modes. The average reflection calculations in the wavelength range of 300–800 nm confirm that in both side textures, a periodicity of 500 nm with a height of 200 nm can be preferentially recommended for less reflection loss and improved scattering in oblique angles. The quantum efficiency calculation verifies that a device designed with these optimized parameters can offer improved efficiency for ultra-thin solar cells.

© 2017 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Light trapping in periodically textured amorphous silicon thin film solar cells using realistic interface morphologies

Vladislav Jovanov, Ujwol Palanchoke, Philipp Magnus, Helmut Stiebig, Jürgen Hüpkes, Porponth Sichanugrist, Makoto Konagai, Samuel Wiesendanger, Carsten Rockstuhl, and Dietmar Knipp
Opt. Express 21(S4) A595-A606 (2013)

Light trapping in thin-film silicon solar cells with submicron surface texture

Rahul Dewan, Marko Marinkovic, Rodrigo Noriega, Sujay Phadke, Alberto Salleo, and Dietmar Knipp
Opt. Express 17(25) 23058-23065 (2009)

Influence of front and back grating on light trapping in microcrystalline thin-film silicon solar cells

Darin Madzharov, Rahul Dewan, and Dietmar Knipp
Opt. Express 19(S2) A95-A107 (2011)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Figures (15)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Equations (2)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Metrics

You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription