A transparent poly(3,4-ethylenedioxylenethiophene):poly(styrene sulfonate) cathode for low temperature processed, metal-oxide free perovskite solar cells

作者：Chen, Li; Xie, Xiaoyin; Liu, Zhihai^*; Lee, Eun-Cheol^*

来源：Journal of Materials Chemistry A, 2017, 5(15): 6974-6980.

DOI：10.1039/c6ta10588b

• EFFICIENT
• POLYMER
• ELECTRODES
• ULTRATHIN
• PEDOTPSS
• FILMS

Low temperature processed, metal-oxide free planar perovskite solar cells (PSCs) were fabricated on glass and polyethylene terephthalate (PET) substrates using polyetherimide (PEI) modified poly(3,4-ethylenedioxylenethiophene):poly(styrene sulfonate) (PEDOT:PSS) as the cathode. The modification by PEI significantly changed the work function of PEDOT: PSS from -5.06 to -4.08 eV, yielding better electron transportation. The rigid cell on the glass substrate exhibited a high power conversion efficiency (PCE) of 12.42% without significant hysteresis and comparable to the PCE of PSCs with metal oxide cathodes. Moreover, the stability in air was higher by 32% than that of the devices with metal-oxide cathodes. The flexible device on the PET substrate exhibited a PCE of 9.73% and good bendability. Our results indicate that the flexibility of the PEDOT: PSS/PEI cathode is promising for use in large-scale roll-to-roll production of PSCs.

• 出版日期2017-4-21
• 单位吉林化工学院