Abstract

We investigate the effect of multiple incoherent layers on the optical characteristics of Cu(In,Ga)Se2 (CIGS) solar cells, based on the equispaced thickness averaging method (ETAM). The studied multiple incoherent layers consist of a glass cover layer, surface flattening layer, and transparent conducting layer, whose respective thicknesses are larger than the coherence length of sunlight (0.6  μm). An independent equispaced thickness is added to each incoherent layer and the coherent simulation results, obtained by the finite element method, are averaged over a combination of the equispaced thicknesses. By applying the proposed method, we calculated the reflectance spectra in planar and surface-textured CIGS solar cells. Considering the planar structure, the calculation results based on the ETAM are in good agreement with the exact analytical solution based on the generalized transfer matrix method. The statistical deviation from the exact solution was calculated with respect to the number of the equispaced thicknesses in each incoherent layer. When only four equispaced thicknesses are used, the calculated deviation from the exact solution rapidly decreases to 1% for planar and 10% for surface-textured CIGS solar cells, which demonstrates that the effect of the multiple incoherent layers can be efficiently calculated based on the ETAM in thin-film solar cells.

© 2018 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Advanced light management based on periodic textures for Cu(In,Ga)Se2 thin-film solar cells

Chidozie Onwudinanti, Robin Vismara, Olindo Isabella, Louis Grenet, Fabrice Emieux, and Miro Zeman
Opt. Express 24(6) A693-A707 (2016)

Using radiative transfer equation to model absorption by thin Cu(In,Ga)Se2 solar cells with Lambertian back reflector

N. Dahan, Z. Jehl, J. F. Guillemoles, D. Lincot, N. Naghavi, and J.-J. Greffet
Opt. Express 21(3) 2563-2580 (2013)

Flexible-textured polydimethylsiloxane antireflection structure for enhancing omnidirectional photovoltaic performance of Cu(In,Ga)Se2 solar cells

Shou-Yi Kuo, Ming-Yang Hsieh, Hau-Vei Han, Fang-I Lai, Tsung-Yeh Chuang, Peichen Yu, Chien-Chung Lin, and Hao-Chung Kuo
Opt. Express 22(3) 2860-2867 (2014)

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 (6)

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 (17)

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