材料科学
色素敏化染料
铋
烧结
化学工程
能量转换效率
相(物质)
太阳能电池
纳米颗粒
光催化
二氧化钛
纳米技术
复合材料
光电子学
冶金
电极
电解质
生物化学
化学
有机化学
物理化学
工程类
催化作用
作者
Hazim Khir,A.K. Pandey,R. Saidur,Muhammad Shakeel Ahmad,M. Samykano,N.A. Rahim
标识
DOI:10.1016/j.mssp.2023.107918
摘要
Flexible dye sensitized solar cell (DSSC) developed at low temperature with low conversion efficiency due to the poor interparticle contact and charge transfer has limited their further development. In this research, bismuth (Bi) nanoparticles were implemented as titanium dioxide (TiO2) photoanode sintering aid to combat this issue. By utilising the liquid phase sintering theory, interparticle contact of photoanode was improved due to neck formation at the TiO2–Bi matrix. This feat was achieved even at low temperature (150 °C and 200 °C) because Bi have a low melting point of 271.5 °C. The charge transfer was also found to have increased while the resistance lowered with the implementation of Bi from the plasmonic effects of Bi nanoparticles. The highest conversion efficiency was obtained at 7.93 % for the TiO2-5wt% Bi sample sintered at 200 °C. The efficiency was 2%–16 % higher than controlled DSSC samples prepared at high temperature (450 °C). The improvement in interparticle contact due to neck formation and enhanced charge transfer with reduced recombination reactions was attributed as the reason for the superior performance. Increasing the Bi composition even further caused reduction in the efficiency due to layer cracking and electron trapping sites from high amount of Bi.
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