Abstract
To generate a high degree of scattering at the front transparent conductive oxide of amorphous silicon thin film solar cells, aluminum-doped zinc oxide films wer etched using an acidic solution. Unfortunately, the sharp protrusions and deep valleys on these textured surfaces can cause defects. Therefore, a random nano-micro pattern was first formed on a glass substrate using a nanoimprint lithography technique; then a thick aluminum-doped zinc oxide layer was deposited atop this, covering the rough surface such that its surface is smoother than that of the patterned glass substrate, allowing for the growth of good quality thin film solar cells. The random nano-micro pattern on the glass substrate scatters the incident light, increasing its path length and probability of light absorption, enhancing the short circuit current density and power conversion efficiency. The solar cells deposited on the aluminum-doped zinc oxide/nano-micro patterns demonstrated an increased short circuit current without any reduction in either the open circuit voltage or fill factor. Relative to an aluminum-doped zinc oxide/flat glass substrate, the short circuit current and power conversion efficiency enhancement of a solar cell on an aluminum-doped zinc oxide/nano-micro patterned glass substrate increased by 8.2% and 12.7%, respectively.
| Original language | English |
|---|---|
| Pages (from-to) | 49-55 |
| Number of pages | 7 |
| Journal | Materials Express |
| Volume | 5 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - 2015 Jan 1 |
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ASJC Scopus subject areas
- Materials Science(all)
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Enhanced amorphous-silicon solar cell efficiency through a wet etched aluminum-doped ZnO pattern replication using direct printing lithography. / Go, Bit Na; Kim, Yang Doo; Kim, Chaehyun; Baek, Su Wung; Oh, Kyoung Suk; Lee, Heon.
In: Materials Express, Vol. 5, No. 1, 01.01.2015, p. 49-55.Research output: Contribution to journal › Article
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TY - JOUR
T1 - Enhanced amorphous-silicon solar cell efficiency through a wet etched aluminum-doped ZnO pattern replication using direct printing lithography
AU - Go, Bit Na
AU - Kim, Yang Doo
AU - Kim, Chaehyun
AU - Baek, Su Wung
AU - Oh, Kyoung Suk
AU - Lee, Heon
PY - 2015/1/1
Y1 - 2015/1/1
N2 - To generate a high degree of scattering at the front transparent conductive oxide of amorphous silicon thin film solar cells, aluminum-doped zinc oxide films wer etched using an acidic solution. Unfortunately, the sharp protrusions and deep valleys on these textured surfaces can cause defects. Therefore, a random nano-micro pattern was first formed on a glass substrate using a nanoimprint lithography technique; then a thick aluminum-doped zinc oxide layer was deposited atop this, covering the rough surface such that its surface is smoother than that of the patterned glass substrate, allowing for the growth of good quality thin film solar cells. The random nano-micro pattern on the glass substrate scatters the incident light, increasing its path length and probability of light absorption, enhancing the short circuit current density and power conversion efficiency. The solar cells deposited on the aluminum-doped zinc oxide/nano-micro patterns demonstrated an increased short circuit current without any reduction in either the open circuit voltage or fill factor. Relative to an aluminum-doped zinc oxide/flat glass substrate, the short circuit current and power conversion efficiency enhancement of a solar cell on an aluminum-doped zinc oxide/nano-micro patterned glass substrate increased by 8.2% and 12.7%, respectively.
AB - To generate a high degree of scattering at the front transparent conductive oxide of amorphous silicon thin film solar cells, aluminum-doped zinc oxide films wer etched using an acidic solution. Unfortunately, the sharp protrusions and deep valleys on these textured surfaces can cause defects. Therefore, a random nano-micro pattern was first formed on a glass substrate using a nanoimprint lithography technique; then a thick aluminum-doped zinc oxide layer was deposited atop this, covering the rough surface such that its surface is smoother than that of the patterned glass substrate, allowing for the growth of good quality thin film solar cells. The random nano-micro pattern on the glass substrate scatters the incident light, increasing its path length and probability of light absorption, enhancing the short circuit current density and power conversion efficiency. The solar cells deposited on the aluminum-doped zinc oxide/nano-micro patterns demonstrated an increased short circuit current without any reduction in either the open circuit voltage or fill factor. Relative to an aluminum-doped zinc oxide/flat glass substrate, the short circuit current and power conversion efficiency enhancement of a solar cell on an aluminum-doped zinc oxide/nano-micro patterned glass substrate increased by 8.2% and 12.7%, respectively.
KW - Amorphous Silicon Solar Cell
KW - Hydrogen Silsesquioxane
KW - Patterned Glass Substrate
KW - Thin Film Solar Cells
KW - ZnO Nanoparticle
UR - http://www.scopus.com/inward/record.url?scp=84919743006&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84919743006&partnerID=8YFLogxK
U2 - 10.1166/mex.2015.1207
DO - 10.1166/mex.2015.1207
M3 - Article
AN - SCOPUS:84919743006
VL - 5
SP - 49
EP - 55
JO - Materials Express
JF - Materials Express
SN - 2158-5849
IS - 1
ER -