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首页> 外文期刊>Chemistry: A European journal >A new mussel-inspired polydopamine sensitizer for dye-sensitized solar cells: Controlled synthesis and charge transfer
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A new mussel-inspired polydopamine sensitizer for dye-sensitized solar cells: Controlled synthesis and charge transfer

机译：用于染料敏化太阳能电池的新型贻贝型聚多巴胺敏化剂：可控制的合成和电荷转移

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摘要

The efficient electron injection by direct dye-to-TiO _2 charge transfer and strong adhesion of mussel-inspired synthetic polydopamine (PDA) dyes with TiO _2 electrode is demonstrated. Spontaneous self-polymerization of dopamine using dip-coating (DC) and cyclic voltammetry (CV) in basic buffer solution were applied to TiO _2 layers under a nitrogen atmosphere, which offers a facile and reliable synthetic pathway to make the PDA dyes, PDA-DC and PDA-CV, with conformal surface and perform an efficient dye-to-TiO _2 charge transfer. Both synthetic methods led to excellent photovoltaic results and the PDA-DC dye exhibited larger current density and efficiency values than those in the PDA-CV dye. Under simulated AM 1.5 G solar light (100 mW cm ~(-2)), a PDA-DC dye exhibited a short circuit current density of 5.50 mW cm ~(-2), corresponding to an overall power conversion efficiency of 1.2 %, which is almost 10 times that of the dopamine dye-sensitized solar cell. The PDA dyes showed strong adhesion with the nanocrystalline TiO 2 electrodes and the interface engineering of a dye-adsorbed TiO _2 surface through the control of the coating methods, reaction times and solution concentration maximized the overall conversion efficiency, resulting in a remarkably high efficiency.
机译：证明了直接染料向TiO _2电荷转移的有效电子注入以及贻贝型合成多巴胺（PDA）染料与TiO _2电极的强粘附性。在碱性气氛下，将浸涂法（DC）和循环伏安法（CV）使多巴胺自发自聚合，并在氮气氛下将其应用于TiO _2层，这为制备PDA染料PDA-提供了一种简便而可靠的合成途径。具有保形表面的DC和PDA-CV，可进行有效的染料到TiO _2的电荷转移。两种合成方法均导致出色的光伏效果，并且PDA-DC染料比PDA-CV染料具有更大的电流密度和效率值。在模拟的AM 1.5 G太阳光（100 mW cm〜（-2））下，PDA-DC染料的短路电流密度为5.50 mW cm〜（-2），对应于1.2％的总功率转换效率，这几乎是多巴胺染料敏化太阳能电池的10倍。 PDA染料通过控制涂布方法，反应时间和溶液浓度，使与纳米TiO 2电极的牢固附着力以及染料吸附的TiO _2表面的界面工程，反应时间和溶液浓度最大化了整体转化效率，从而显着提高了效率。

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