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首页> 外文期刊>Advanced energy materials >High Efficiency (>17%) Si-Organic Hybrid Solar Cells by Simultaneous Structural, Electrical, and Interfacial Engineering via Low-Temperature Processes
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High Efficiency (>17%) Si-Organic Hybrid Solar Cells by Simultaneous Structural, Electrical, and Interfacial Engineering via Low-Temperature Processes

机译：通过低温过程同时进行结构，电气和界面工程设计的高效（> 17％）硅有机混合太阳能电池

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摘要

Highly efficient organic-inorganic hybrid solar cells of Si-poly(3,4-ethylenedi oxythiophene):polystyrene sulfonate (PEDOT:PSS) have been demonstrated by simultaneous structural, electrical, and interfacial engineering with low processing temperature. Si substrate has been sculpted into hierarchical structure to reduce light reflection loss and increase interfacial junction area at the same time. Regarding the electrical optimization, highly conductive organic PEDOT: PSS layer has been formulated with low sheet resistance. It is argued that the sheet resistance, rather than conductivity, is the primary parameter for the high efficiency hybrid cells, which leads to the optimization of thickness, i.e., thick enough to have low sheet resistance but transparent enough to pass the incident sunlight. Finally, siloxane oligomers have been inserted into top/bottom interfaces by contact-printing at room ambient, which suppresses carrier recombination at interfaces and reduces contact resistance at bottom electrode. Contrary to high-temperature doping (for the formation of front surface or back surface fields), wet solution processes or vacuum-based deposition, the contact-printing can be done at room ambient to reduce carrier recombination at the interfaces. The high efficiency obtained with low processing temperature can make this type of cells be a possible candidate for post-Si photovoltaics.
机译：Si-聚（3,4-乙二氧基噻吩）：聚苯乙烯磺酸盐（PEDOT：PSS）的高效有机-无机杂化太阳能电池已通过同时进行的结构，电气和界面工程处理且加工温度低而得到证明。 Si基板已雕刻为分层结构，以减少光反射损失并同时增加界面结面积。关于电气优化，高导电性有机PEDOT：PSS层已被制成低薄层电阻。据认为，薄层电阻而不是电导率是高效混合电池的主要参数，这导致厚度的优化，即，足够厚以具有低薄层电阻但足够透明以使入射的阳光通过。最后，通过在室温下进行接触印刷将硅氧烷低聚物插入到顶部/底部界面中，从而抑制了界面处的载流子复合并降低了底部电极处的接触电阻。与高温掺杂（用于形成前表面或后表面场），湿法工艺或基于真空的沉积相反，可以在室温下进行接触印刷，以减少界面处的载流子复合。在较低的处理温度下获得的高效率可使这种类型的电池成为后硅光伏电池的可能候选者。

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