A thermal stable cathode buffer based on an inexpensive tetranuclear zinc(II) complex for organic photovoltaic devices

作者：Li ZhiGang; Gao ZhiQiang; Wang HaiShan; Zhang Hui; Zhao XinYan; Mi BaoXiu; Huang Wei

来源：Science China Chemistry, 2012, 55(12): 2562-2566.

DOI：10.1007/s11426-012-4704-9

• organic photovoltaic devices
• thermal stability
• inexpensive
• cathode buffer layer

An inexpensive material, i.e., tetranuclear zinc(II) complex, (Zn4O(AID)(6)) [AID = 7-azaindolate], was utilized as a cathode buffer in organic photovoltaic (OPV) devices, leading to the improvement of device performance. Compared to OPV devices based on a conventional cathode buffer of TPBi (1,3,5-tris(2-N-phenylbenzimidazolyl)benzene), although the freshly prepared devices showed similar performance, when heated to a series of high temperatures under air, the short circuit current and the open circuit voltage of the Zn4O(AID)(6) devices dropped more slowly, indicating the superiority of using Zn4O(AID)(6) as a cathode buffer over TPBi in OPV devices.

• 出版日期2012-12
• 单位南京大学