Anti-Fatigue Tandem Organic Photovoltaics for Indoor Illumination.
Hao LiZhong ZhengShiwei YangTao WangYi YangYanjie TangShaoqing ZhangJianhui HouPublished in: Advanced materials (Deerfield Beach, Fla.) (2024)
The ability of achieving high efficiency makes tandem organic photovoltaics (PVs) a competitive technique in potential indoor applications. Except high efficiency, reliable indoor energy supply also calls for outstanding stability. However, unavoidable unstable voltage supply from the circuit control system for indoor light sources like light emitting diodes (LED) and incandescent lamps would cause carrier density fluctuation and device fatigue driven by periodic light/dark switching. In this work, the strobing-induced fatigue within the bulk heterojunction (BHJ)/interconnecting layer (ICL) interface is first revealed and overcome. Based on reliable and effective interfacial doping between conjugated acceptor and metal oxide, the interfacial capacitance that determines the strobing-induced fatigue, has been significantly restrained. The imbalance carrier migration and fierce inter-layer accommodating during the burn-in stage caused by light strobing are substantially diminished. Benefit from this method, the stability of tandem devices is highly enhanced under strobing indoor illumination, and a champion efficiency (35.02%) is obtained. The method provides guidance for further material design for interconnecting layers in organic photovoltaics.
Keyphrases
- high efficiency
- air pollution
- particulate matter
- health risk
- sleep quality
- high glucose
- diabetic rats
- solar cells
- molecular dynamics simulations
- drinking water
- ionic liquid
- drug induced
- water soluble
- perovskite solar cells
- endothelial cells
- oxidative stress
- heavy metals
- risk assessment
- physical activity
- quantum dots
- electron transfer
- energy transfer
- human health