Abstract
Transparent and flexible Sb-doped SnO2 (ATO) films with a nanoscale AgTi alloyed interlayer were fabricated for use as plasma damage-free, indium-free, thermally stable electrodes for high performance heat generating films and shielding films in smart windows. The AgTi alloy-inserted ATO film on a PET substrate showed a low sheet resistance of 6.91 ohm per square and a high optical transmittance of 90.24% without thermal annealing or intentional substrate heating. Even after deformation using an outer bending radius of 4 mm, the ATO film with a AgTi interlayer showed a constant sheet resistance due to the mechanical robustness of the AgTi interlayer. Furthermore, the AgTi-inserted ATO film showed a constant resistance even after annealing at 500 °C, unlike the Ag-inserted ATO films. Furthermore, we demonstrated the feasibility of the AgTi-inserted ATO films as transparent heat generating films and shielding films for smart windows. The effective heat generation and shield performance of the ATO/Ag–Ti/ATO multilayer suggests that the multi-functional ATO/Ag–Ti/ATO films can be used to create energy-efficient smart windows for building energy management systems and automobiles.
Highlights
The rapid development of building energy management systems (BEMSs) requires high performance heat generating lms and heat shielding lm-based smart windows.[1,2,3,4,5] In addition, automobiles require high performance heat generating and heat shielding windows for removing ice or frost on the window and blocking sunlight from outside
We demonstrated the feasibility of the AgTi-inserted ATO films as transparent heat generating films and shielding films for smart windows
The effective heat generation and shield performance of the ATO/Ag–Ti/ATO multilayer suggests that the multi-functional ATO/Ag–Ti/ATO films can be used to create energy-efficient smart windows for building energy management systems and automobiles
Summary
The rapid development of building energy management systems (BEMSs) requires high performance heat generating lms and heat shielding lm-based smart windows.[1,2,3,4,5] In addition, automobiles require high performance heat generating and heat shielding windows for removing ice or frost on the window and blocking sunlight from outside. Ag-based heat generating and shielding lms have very low optical transmittance due to the inherent opacity of the metal lm.[7,8] it is important to develop highly transparent and exible metalbased electrodes for heat generating and shielding lms to replace conventional Ag-based semitransparent electrodes. We investigated the electrical, optical, morphological, and mechanical properties of ATO lms on PET substrates with a thermally evaporated Ag–Ti alloy layer for use as transparent, exible, thermally stable electrodes for heat generating and shielding lms in smart windows. We demonstrated the feasibility of thermally evaporated ATO/Ag–Ti/ATO lms for high performance simultaneous heat generating lms and heat shielding lms
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