Anti-reflective　coatings　play　a　vital　in　improving　the　power　conversion　efficiency　(PCE)　of　solar　cells,　but　they　still　suffers　from　poor　self-cleaning　performance　and　low　transmittance.　Herein,　this　paper　presents　broadband　anti-reflective　coatings　prepared　from　ZnO,　polyethylene　glycol　(PEG)　and　modified　silica　gel　consists　of　the　low　surface　energy　substances　methyltrimethoxysilane　(MTMS)　and　tetraethylorthosilicate　(TEOS).　Specifically,　the　prepared　coatings　possess　a　porous　cross-linked　network　to　ensure　low　refractive　index　and　good　adhesion　to　the　substrate.　Based　on　experimental　results,　the　broadband　transmittance　of　these　coatings　is　4.8　%　higher　than　bare　glass　and　the　peak　transmittance　is　up　to　98.4　%　at　473　nm.　Correspondingly,　the　PCE　of　the　coating　increased　by　1.23　%.　Simulated　outdoor　testing　further　confirms　its　excellent　dust　removal　and　organic　matter　degradation　capabilities.　These　rational　designed　multifunctional　coatings　possess　great　potential　for　application　in　broadband　transmittance-enhancing　and　in　a　variety　of　complex　environments　(dust,　organic　contamination,　bird　droppings).　©　2025　Elsevier　B.V.