Year: 2023
Type: article
Abstract: Advanced light management via front‐coated photonic nanostructures is a promising strategy to enhance photovoltaic (PV) efficiency through wave‐optical light‐trapping (LT) effects, avoiding the conventional texturing processes that induce the degradation of electrical performance due to increased carrier recombination. Titanium dioxide (TiO2) honeycomb arrays with different geometry are engineered through a highly‐scalable colloidal lithography method on flat crystalline silicon (c‐Si) wafers and tested on standard planar c‐Si interdigitated back‐contact solar cells (pIBCSCs). The photonic‐structured wafers achieve an optical photocurrent of 36.6 mA cm−2, mainly due to a broad anti‐reflection effect from the 693 nm thick nanostructured coatings. In contrast, the pIBCSC test devices reach 14% efficiency with 679 nm thick TiO2 nanostructures, corresponding to a ≈30% efficiency gain relative to uncoated pIBCSCs. In addition, several designed structures show unmatched angular acceptance enhancements in efficiency (up to 63% gain) and photocurrent density (up to 68% gain). The high‐performing (yet electrically harmless) LT scheme, here presented, entails an up‐and‐coming alternative to conventional texturing for c‐Si technological improvement that can be straightforwardly integrated into the established PV industry.
Source: Advanced Optical Materials
Language: English
Subfield: Electrical and Electronic Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: hybrid
Estimated APC paid: $4,430
Awards: G1041569632, G1143130600, G1152344396, G2010546512, Células solares tandem melhoradas opticamente, Instituto de Nanoestruturas, Nanomodelação e Nanofabricação, Photonic-enhanced Quantum Nano-structured Perovskite Solar Cells, G3725967206, G3783317134, Instituto de Nanoestruturas, Nanomodelação e Nanofabricação, G434337789, G4363013302, G4937468798, G4971050434, Células Solares Flexíveis de Filmes Finos de Silício Cristalino e Perovskite com Elevada Eficiência, G5454278309, G5888841481, G5955531675, G6014161674, G6280310554, G643512280, G6726495092, G6885007511, SYmbiosis for eNERGY harversting concepts for smart platforms on foils, Instituto de Nanoestruturas, Nanomodelação e Nanofabricação, G8413943638, G8911869519
OpenAlex ID: W4367679156