We Claim:
1. A solar glass substrate coated with a dual functional Anti-Reflective (AR) coating
film comprising:
a down conversion solution comprising rare earth oxides as primary metal
5 oxides for down conversion luminescence; and
an Anti-Reflection Coating (ARC) liquid wherein,
the down conversion solution is doped into an ARC liquid and
wherein, the resultant composite anti- reflective coating film modifies the
spectral characteristics of incident light by converting ultraviolet light into
10 visible light, thereby reducing reflection losses and enhancing solar energy
harvesting efficiency;
the resultant composite Anti-Reflection Coating (ARC) film has a
thickness of 140-180 nm and refractive index ranges from 1.25-1.4.
15 2. The solar glass substrate of claim 1, wherein the down conversion solution
comprising rare earth oxides are selected from the group consisting of Lanthanum
(La), Cerium (Ce), Praseodymium (Pr), Neodymium (Nd), Promethium (Pm),
Samarium (Sm), Europium (Eu), Gadolinium (Gd), Terbium (Tb), Dysprosium
(Dy), Holmium (Ho), Erbium (Er), Thulium (Tm), Ytterbium (Yb), Lutetium (Lu),
20 Yttrium (Y), and Bismuth (Bi).
3. The solar glass substrate of claim 1, wherein the down conversion solution
comprising lanthanide metal oxides are present in a concentration of 0.1 wt% to 10
wt%.
25
4. The solar glass substrate of claim 1, wherein the doped composite ARC film is
applied on the substrate using a coating technique selected from the group
13
consisting of dip coating, spin-coating, drop-casting, sedimentation, solvent
evaporation, roll coating, chemical vapor deposition, and physical vapor deposition.
5. The composite anti-reflection coating (ARC) film of claim 1, wherein the composite
5 anti-reflection coating (ARC) film is configured to maintain optical transmittance of
the glass while modifying the spectral characteristics of incident light