Organoboron complexes are of interest as chromophores for dye sensitizers owing to their light‐harvesting and carrier‐transporting properties. In this study, compounds containing boron β‐ketoiminate (BKI) as a chromophore were synthesized and used as dye sensitizers in dye‐sensitized solar cells. The new dyes were orange or red crystals and showed maximum absorptions in the 410–450 nm wavelength region on titanium dioxide substrates. These electrodes exhibited maximum efficiencies of over 80% in incident photon‐to‐current conversion efficiency spectra, suggesting that the continuous process of light absorption‐excitation‐electron injection was effectively performed. Open‐circuit photovoltages were relatively high owing to the large dipole moments of the BKI dyes with a linear molecular structure. Thus, a maximum power conversion efficiency of 5.3% was successfully observed. Comparison of BKI dyes with boron β‐diketonate dyes revealed certain differences in solution stability, spectral properties, and photovoltaic characteristics.

中文翻译：

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形成线性供体-π-受体结构的β-酮化硼染料的合成及其光伏性能。

有机染料复合物因其光捕获和载流子传输特性而作为染料敏化剂的生色团而受到关注。在这项研究中，合成了含β-酮亚硼化硼（BKI）作为生色团的化合物，并将其用作染料敏化太阳能电池中的染料敏化剂。新染料为橙色或红色晶体，在二氧化钛基材上的410-450 nm波长区域显示最大吸收。这些电极在入射光子-电流转换效率光谱中显示出超过80％的最大效率，这表明光吸收-激发-电子注入的连续过程得到了有效执行。由于具有线性分子结构的BKI染料的偶极矩较大，因此开路光电压较高。因此，最大功率转换效率为5。成功观察到3％。BKI染料与β-二酮硼酸硼染料的比较显示溶液稳定性，光谱性质和光伏特性方面存在某些差异。