Analysis of light trapping effects in Si solar cells with a textured surface by ray tracing simulation

Seok Joo Byun; Seok Yong Byun; Jangkyo Lee; Jae Wan Kim; Taek Sung Lee; Kyuman Cho; Dongwoo Sheen; Sung Ju Tark; Donghwan Kim; Won Mok Kim

doi:10.1016/j.cap.2011.01.048

Analysis of light trapping effects in Si solar cells with a textured surface by ray tracing simulation

Seok Joo Byun, Seok Yong Byun, Jangkyo Lee, Jae Wan Kim, Taek Sung Lee, Kyuman Cho, Dongwoo Sheen, Sung Ju Tark, Donghwan Kim, Won Mok Kim

Research output: Contribution to journal › Article › peer-review

10 Citations (Scopus)

Abstract

The effects of the size and density of a pyramidal texture, as formed on the surface of Si solar cells to increase the light trapping efficiency, on the optical reflectance and absorptance were examined by comparing simulation results and experimental observations. A ray tracing algorithm capable of the direct calculation of the absorbed energy in active Si was utilized for the simulation. The simulation results showed that the optical reflectance spectra, i.e., the absorptances, of the textured surface with a fixed density of pyramids were not affected by the pyramid pitch, whereas the spectra with varying density of pyramids decreased with an increase in the density of the pyramids. Observations similar to the simulation results were observed from the experimentally textured surfaces, indicating that the density of the pyramid area, i.e., the area of the flat region, is the most crucial factor affecting the optical behavior of a textured Si surface with three-dimensional pyramid patterns.

Original language	English
Pages (from-to)	S23-S25
Journal	Current Applied Physics
Volume	11
Issue number	4 SUPPL.
DOIs	https://doi.org/10.1016/j.cap.2011.01.048
Publication status	Published - 2011 Jul

Bibliographical note

Funding Information:
This work was supported in part by a KIST internal project under contract 2E21832, and partially by the New & Renewable Energy of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) grant funded by the Korean Ministry of Knowledge Economy (No. 2008-N-PV08-P-09-0-000 ). It was also supported by the Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology (MEST) ( 2010-0000834 ).

Keywords

Etching
Ray tracing
Si solar cell
Texture

ASJC Scopus subject areas

General Materials Science
General Physics and Astronomy

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10.1016/j.cap.2011.01.048

Cite this

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title = "Analysis of light trapping effects in Si solar cells with a textured surface by ray tracing simulation",

abstract = "The effects of the size and density of a pyramidal texture, as formed on the surface of Si solar cells to increase the light trapping efficiency, on the optical reflectance and absorptance were examined by comparing simulation results and experimental observations. A ray tracing algorithm capable of the direct calculation of the absorbed energy in active Si was utilized for the simulation. The simulation results showed that the optical reflectance spectra, i.e., the absorptances, of the textured surface with a fixed density of pyramids were not affected by the pyramid pitch, whereas the spectra with varying density of pyramids decreased with an increase in the density of the pyramids. Observations similar to the simulation results were observed from the experimentally textured surfaces, indicating that the density of the pyramid area, i.e., the area of the flat region, is the most crucial factor affecting the optical behavior of a textured Si surface with three-dimensional pyramid patterns.",

keywords = "Etching, Ray tracing, Si solar cell, Texture",

author = "Byun, {Seok Joo} and Byun, {Seok Yong} and Jangkyo Lee and Kim, {Jae Wan} and Lee, {Taek Sung} and Kyuman Cho and Dongwoo Sheen and Tark, {Sung Ju} and Donghwan Kim and Kim, {Won Mok}",

note = "Funding Information: This work was supported in part by a KIST internal project under contract 2E21832, and partially by the New & Renewable Energy of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) grant funded by the Korean Ministry of Knowledge Economy (No. 2008-N-PV08-P-09-0-000 ). It was also supported by the Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology (MEST) ( 2010-0000834 ).",

year = "2011",

month = jul,

doi = "10.1016/j.cap.2011.01.048",

language = "English",

volume = "11",

pages = "S23--S25",

journal = "Current Applied Physics",

issn = "1567-1739",

publisher = "Elsevier B.V.",

number = "4 SUPPL.",

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AU - Byun, Seok Joo

AU - Byun, Seok Yong

AU - Lee, Jangkyo

AU - Kim, Jae Wan

AU - Lee, Taek Sung

AU - Cho, Kyuman

AU - Sheen, Dongwoo

AU - Tark, Sung Ju

AU - Kim, Donghwan

AU - Kim, Won Mok

N1 - Funding Information: This work was supported in part by a KIST internal project under contract 2E21832, and partially by the New & Renewable Energy of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) grant funded by the Korean Ministry of Knowledge Economy (No. 2008-N-PV08-P-09-0-000 ). It was also supported by the Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology (MEST) ( 2010-0000834 ).

PY - 2011/7

Y1 - 2011/7

N2 - The effects of the size and density of a pyramidal texture, as formed on the surface of Si solar cells to increase the light trapping efficiency, on the optical reflectance and absorptance were examined by comparing simulation results and experimental observations. A ray tracing algorithm capable of the direct calculation of the absorbed energy in active Si was utilized for the simulation. The simulation results showed that the optical reflectance spectra, i.e., the absorptances, of the textured surface with a fixed density of pyramids were not affected by the pyramid pitch, whereas the spectra with varying density of pyramids decreased with an increase in the density of the pyramids. Observations similar to the simulation results were observed from the experimentally textured surfaces, indicating that the density of the pyramid area, i.e., the area of the flat region, is the most crucial factor affecting the optical behavior of a textured Si surface with three-dimensional pyramid patterns.

AB - The effects of the size and density of a pyramidal texture, as formed on the surface of Si solar cells to increase the light trapping efficiency, on the optical reflectance and absorptance were examined by comparing simulation results and experimental observations. A ray tracing algorithm capable of the direct calculation of the absorbed energy in active Si was utilized for the simulation. The simulation results showed that the optical reflectance spectra, i.e., the absorptances, of the textured surface with a fixed density of pyramids were not affected by the pyramid pitch, whereas the spectra with varying density of pyramids decreased with an increase in the density of the pyramids. Observations similar to the simulation results were observed from the experimentally textured surfaces, indicating that the density of the pyramid area, i.e., the area of the flat region, is the most crucial factor affecting the optical behavior of a textured Si surface with three-dimensional pyramid patterns.

KW - Etching

KW - Ray tracing

KW - Si solar cell

KW - Texture

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Analysis of light trapping effects in Si solar cells with a textured surface by ray tracing simulation

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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