Universidad Anáhuac México, Campus Norte, Engineering Department, Avenida Universidad Anáhuac 46, Col. Lomas Anáhuac, Huixquilucan 52786, Estado de México, Mexico.
Instituto de Química, Universidad Nacional Autónoma de México, Circuito Exterior, Ciudad Universitaria, Ciudad de México 04510, Mexico.
Molecules. 2018 Mar 24;23(4):751. doi: 10.3390/molecules23040751.
A new series of Fischer carbenes have been synthetized and examined as hole-transporting or electron-transporting layers (HTLs or ETLs) in the fabrication of organic solar cells (OSCs). The synthesis of three Fischer aminocarbene complexes with the general formula [Cr(CO)₅{C(NHCH₂)Ar}] (Ar = 2-pyridyl (), 3-pyridyl () and 4-pyridyl ()) is reported. The molecular structure of complex has been confirmed by X-ray analysis. In order to study the possible applications of the three Fischer aminocarbenes in OSCs, thin films of these complexes were prepared using a vacuum deposition process. These organometallic films were chemically and morphologically characterized by IR spectroscopy, SEM, AFM and XRD. According to the IR and Tauc analysis, the vacuum deposition process generates thin films free of impurities with an activation energy of 4.0, 2.7 and 2.1 eV for , y respectively. The UV-vis spectra of the amorphous aminocarbene films show that they are practically transparent to the visible radiation of the electromagnetic spectrum. This is due to the fact that their absorption is located mainly in the ultraviolet range. Two OSCs with bulk-heterojunction configuration were manufactured in order to prove the use of the aminocarbenes as ETL o HTL. The aminocarbene [Cr(CO)₅{C(NHCH₂) 4-pyridyl}] () proved to be suitable as ETL with a fill factor (FF) of 0.23 and a short circuit current density () of 1.037 mA/cm².
已合成了一系列新型 Fischer 卡宾，并将其作为空穴传输或电子传输层（HTLs 或 ETLs）用于有机太阳能电池（OSCs）的制备。报道了三种 Fischer 氨基卡宾配合物的合成，其通式为[Cr(CO)₅{C(NHCH₂)Ar}]（Ar = 2-吡啶基（）、3-吡啶基（）和 4-吡啶基（））。配合物的分子结构已通过 X 射线分析得到证实。为了研究三种 Fischer 氨基卡宾在 OSCs 中的可能应用，使用真空沉积工艺制备了这些配合物的薄膜。通过红外光谱、SEM、AFM 和 XRD 对这些有机金属薄膜进行了化学和形态学表征。根据红外和 Tauc 分析，真空沉积过程生成了无杂质的薄膜，其活化能分别为 4.0、2.7 和 2.1 eV。非晶态氨基卡宾薄膜的紫外-可见光谱表明，它们对电磁光谱的可见光辐射几乎是透明的。这是因为它们的吸收主要位于紫外线范围内。为了证明氨基卡宾作为 ETL 或 HTL 的用途，制造了两个具有体异质结结构的 OSCs。氨基卡宾[Cr(CO)₅{C(NHCH₂)4-吡啶基}]（）被证明适合用作 ETL，填充因子（FF）为 0.23，短路电流密度（）为 1.037 mA/cm²。
