TY - JOUR
T1 - High-Efficiency Vivid Color CIGS Solar Cell Employing Nondestructive Structural Coloration
AU - Shafian, Shafidah
AU - Eun Lee, Ga
AU - Yu, Hyeonggeun
AU - Jeong, Jeung hyun
AU - Kim, Kyungkon
N1 - Funding Information:
This research was supported by the National Research Foundation of Korea (NRF) Grant funded by the Ministry of Science, ICT and Future Planning (NRF‐2019M1A2A2072417, NRF‐2021R1A6A1A10039823 and NRF‐2020R1A2C1101905).
Publisher Copyright:
© 2022 Wiley-VCH GmbH.
PY - 2022/4
Y1 - 2022/4
N2 - Structural coloration is an effective method for coloring a solar cell with minimum optical loss. For the application of building integrated photovoltaics, it is desirable to integrate structural colors directly onto the solar cell without damaging it with an economical process. Herein, a solution-processed distributed Bragg reflector (sDBR) is introduced to realize efficient and vividly colored CuInxGa(1−x)Se2 (CIGS) solar cells. The sDBR is directly combined with the CIGS solar cell at room temperature without damaging the photoactive layer. The sDBR is fabricated on CIGS solar cells by spin coating alternate layers of solution-processable TiO2 nanoparticles bound with acetylacetone and a polymethyl methacrylate solution. The vividly colored CIGS solar cells exhibit high reflectivity and narrow bandwidth at the designated wavelength, resulting in pure red, green, and blue. The reduction in the photocurrent by the coloring is minimized due to the narrow bandwidth characteristics of the sDBR, while a gain in the photocurrent is obtained at wavelengths outside of the range used for coloring due to the antireflection effect of the sDBR. As a result, the power conversion efficiency of R, G, and B sDBR/CIGS solar cells is 97.2%, 99.4% and 102%, respectively, compared to a conventional CIGS solar cell.
AB - Structural coloration is an effective method for coloring a solar cell with minimum optical loss. For the application of building integrated photovoltaics, it is desirable to integrate structural colors directly onto the solar cell without damaging it with an economical process. Herein, a solution-processed distributed Bragg reflector (sDBR) is introduced to realize efficient and vividly colored CuInxGa(1−x)Se2 (CIGS) solar cells. The sDBR is directly combined with the CIGS solar cell at room temperature without damaging the photoactive layer. The sDBR is fabricated on CIGS solar cells by spin coating alternate layers of solution-processable TiO2 nanoparticles bound with acetylacetone and a polymethyl methacrylate solution. The vividly colored CIGS solar cells exhibit high reflectivity and narrow bandwidth at the designated wavelength, resulting in pure red, green, and blue. The reduction in the photocurrent by the coloring is minimized due to the narrow bandwidth characteristics of the sDBR, while a gain in the photocurrent is obtained at wavelengths outside of the range used for coloring due to the antireflection effect of the sDBR. As a result, the power conversion efficiency of R, G, and B sDBR/CIGS solar cells is 97.2%, 99.4% and 102%, respectively, compared to a conventional CIGS solar cell.
KW - BIPV
KW - CIGS solar cells
KW - coloring solar cells
KW - solution processed distributed Bragg reflector
KW - structural colors
UR - http://www.scopus.com/inward/record.url?scp=85122758501&partnerID=8YFLogxK
U2 - 10.1002/solr.202100965
DO - 10.1002/solr.202100965
M3 - Article
AN - SCOPUS:85122758501
SN - 2367-198X
VL - 6
JO - Solar RRL
JF - Solar RRL
IS - 4
M1 - 2100965
ER -