研究目的
Investigating the thermal and light stability enhancement of planar perovskite solar cells (PSCs) through dye-sensitization of the titania compact layer with the D35 dye.
研究成果
The D35 dye significantly enhances the thermal and light stability of planar PSCs, preserving 75% of their initial PCE after 2 h of thermal stress at 100°C and showing improved stability under light stress. The dye's hydrophobic characteristics, acidic nature, and ability to induce high perovskite crystallinity contribute to this stability enhancement.
研究不足
The study focuses on the interface between titania and MAPbI3 absorber, excluding the influence of the hole transporter and the silver cathode. The thermal stability of Spiro-MeOTAD HTM and the migration of silver cathode electrodes at high temperatures are not addressed.
1：Experimental Design and Method Selection:
The study employed a triphenylamine-based metal-free organic dye, D35, to modify the perovskite/titania interface. The dye was chemically adsorbed via a bidentate anchor group upon the TiO2 underlayer.
2：Sample Selection and Data Sources:
Perovskite films were deposited on titania compact layers sensitized with D35 dye and on pure titania substrates for comparison.
3：List of Experimental Equipment and Materials:
SEM, AFM, XRD, UV-Vis spectroscopy, Raman spectroscopy, and photovoltaic parameter measurements were used.
4：Experimental Procedures and Operational Workflow:
Samples were thermally treated inside a glove box and characterized before and after thermal stress. PSCs were fabricated and their performance evaluated.
5：Data Analysis Methods:
The data was analyzed to evaluate the effect of D35 on the thermal and light stability of PSCs.
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