Light Trapping Color Filters for Semitransparent Solar Cells
- 주제(키워드) colored solar cells , light scattering , colorfilter , diffuse reflection , dye-sensitized solarcells (DSSCs)
- 주제(기타) Chemistry, Physical; Energy & Fuels; Materials Science, Multidisciplinary
- 설명문(일반) [Kim, Minji; Hyun, Jerome K.] Ewha Womans Univ, Dept Chem & Nanosci, Seoul 03760, South Korea; [Ryu, Junyeong; Park, Jongdeok; Lee, Jae-Joon] Dongguk Univ, Res Ctr Photoenergy Harvesting & Convers Technol, Dept Energy Mat & Engn, Seoul 04620, South Korea
- 등재 SCIE, SCOPUS
- 발행기관 AMER CHEMICAL SOC
- 발행년도 2024
- 총서유형 Journal
- URI http://www.dcollection.net/handler/ewha/000000213642
- 본문언어 영어
- Published As https://doi.org/10.1021/acsaem.3c02681
초록/요약
Semitransparent colorful solar cells equipped with photonically tailored Fabry-Perot (FP) cavities as the back electrode have garnered attention for their prospective application in building integrated photovoltaics (BIPVs). These cells transmit colored light at the FP resonance while reflecting nonresonant light back into the cell, a significant portion of which is also lost into air. Herein, we present a method to enhance light trapping in colorful semitransparent solar cells using closely packed Ag-coated silica particles on a thin Ag layer. This structure simultaneously acts as an effective FP cavity and color filter, scattering off-resonant light to high angles while transmitting the targeted colors. We show that the high-angle scattering originates from antiparallel out-of-plane electric dipoles unique to our design, which promote light trapping. When applied onto a dye-sensitized solar cell (DSSC), our effective Fabry-Perot (EFP) color filters provided a maximum of similar to 7% more short-circuit current density (J(sc)) than those from DSSCs equipped with planar filters. Furthermore, compared to bare DSSCs and DSSCs including conventional scattering layers, DSSCs equipped with EFP filters showed a maximum of 14.6 and 5.9% higher cell efficiencies (eta), respectively. The ability to filter color and improve light trapping suggests alternative pathways for engineering colorful semitransparent solar cells.
more