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首页> 外文期刊>RSC Advances >Facile synthesis of a dopant-free hole transporting material with a phenothiazine core for planar perovskite solar cells
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Facile synthesis of a dopant-free hole transporting material with a phenothiazine core for planar perovskite solar cells

机译：用于平面钙钛矿太阳能电池的无吩噻嗪核无掺杂空穴传输材料的简便合成

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摘要

A novel electron-rich small-molecule, 4,4′-(10-(4-octylphenyl)-10H-phenothiazine-3,7-diyl)bis(N,N-(4-methoxyphenyl)anilene) (PTZ-TPA), containing phenothiazine as the core with triphenylamine side groups, was synthesized via a Suzuki–Miyaura cross-coupling reaction. When PTZ-TPA was incorporated into a CH3NH3PbI3 perovskite solar cell as a dopant-free hole transporting material (HTM), a short circuit photocurrent density of 21.5 mA cm?2, an open circuit voltage of 0.982 V, and a fill factor of 0.679 were obtained, giving rise to an overall power conversion efficiency of 14.3%, which is comparable to the power conversion efficiency obtained using the current state-of-the-art HTM 2,20,7,70-tetrakis(N,N′-di-p-methoxyphenylamine)-9,90-spirobifluorene with dopant (Spiro-MeOTAD, power conversion efficiency of 17.1%). PTZ-TPA is thus a promising HTM with the potential to replace the expensive Spiro-MeOTAD owing to its comparable performance and much simpler synthesis route; it also presented a better stability during a one week aging test compared with Spiro-MeOTAD.
机译：一种新型的富电子小分子4,4'-（10-（4-辛基苯基）-10 H -吩噻嗪-3,7-二基）bis（ N ， N -（4-甲氧基苯基）苯胺）（PTZ-TPA），以吩噻嗪为核心，带有三苯胺侧基，是通过 Suzuki-Miyaura交叉-偶联反应。当PTZ-TPA结合到CH 3 NH 3 PbI 3 钙钛矿太阳能电池作为无掺杂空穴传输材料（HTM），短路光电流密度为21.5 mA cm ？2 ，开路获得0.982 V的电压和0.679的填充系数，从而使总功率转换效率达到14.3％，这与使用当前最新HTM 2,20获得的功率转换效率相当， 7,70-四（（em> N ， N '-二- p -甲氧基苯胺）-9,90-螺二芴与掺杂剂（Spiro-MeOTAD ，电源转换效率为17.1％）。因此，PTZ-TPA是一种很有前途的HTM，因为它具有可比的性能和更简单的合成路线，它有可能取代昂贵的Spiro-MeOTAD。与Spiro-MeOTAD相比，它在1周的老化测试中也显示出更好的稳定性。

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