Kaur Navdeep, Mahajan Aman, Bhullar Viplove, Singh Davinder Paul, Saxena Vibha, Debnath A K, Aswal D K, Devi Devarani, Singh Fouran, Chopra Sundeep
Department of Physics, Guru Nanak Dev University Amritsar - 143 005 India
Thin Film Devices Section, Technical Physics Division, Bhabha Atomic Research Centre Mumbai - 400 085 India.
RSC Adv. 2019 Jul 1;9(35):20375-20384. doi: 10.1039/c9ra02657f. eCollection 2019 Jun 25.
Plasmonic dye-sensitized solar cells containing metal nanoparticles suffer from stability issues due to their miscibility with liquid iodine-based electrolytes. To resolve the stability issue, herein, an ion implantation technique was explored to implant metal nanoparticles inside TiO, which protected these nanoparticles with a thin coverage of TiO melt and maintained the localized surface plasmon resonance oscillations of the metal nanoparticles to efficiently enhance their light absorption and make them corrosion resistant. Herein, Au nanoparticles were implanted into the TiO matrix up to the penetration depth of 22 nm, and their influence on the structural and optical properties of TiO was studied. Moreover, plasmonic dye-sensitized solar cells were fabricated using N719 dye-loaded Au-implanted TiO photoanodes, and their power conversion efficiency was found to be 44.7% higher than that of the unimplanted TiO-based dye-sensitized solar cells due to the enhanced light absorption of the dye molecules in the vicinity of the localized surface plasmon resonance of Au as well as the efficient electron charge transport at the TiO@Au@N719/electrolyte interface.
含有金属纳米颗粒的等离子体染料敏化太阳能电池由于其与基于碘的液体电解质的混溶性而存在稳定性问题。为了解决稳定性问题，本文探索了一种离子注入技术，将金属纳米颗粒注入TiO₂内部，用一层薄的TiO₂熔体覆盖层保护这些纳米颗粒，并保持金属纳米颗粒的局域表面等离子体共振振荡，以有效增强其光吸收并使其具有抗腐蚀性。在此，将金纳米颗粒注入TiO₂基体，穿透深度达22nm，并研究了其对TiO₂结构和光学性能的影响。此外，使用负载N719染料的金注入TiO₂光阳极制备了等离子体染料敏化太阳能电池，由于金的局域表面等离子体共振附近染料分子的光吸收增强以及TiO₂@Au@N719/电解质界面处的有效电子电荷传输，发现其功率转换效率比未注入的基于TiO₂的染料敏化太阳能电池高44.7%。
