ABSTRACT The present work demonstrates electron transport layer (ETL) engineering to enhance the photovoltaic performance and energy conversion mechanism of a flexible hybrid device with the configuration Ag/PEDOT:PSS/P3HT:PCBM/TiO 2 /ZnO/ITO‐coated PET (P1). Further, an analytical comparison was carried out with control devices given as Ag/PEDOT:PSS/P3HT/TiO 2 /ZnO/ITO/flexible PET (P2), Ag/P3HT/TiO 2 /ZnO/ITO/flexible PET (P3), Ag/PEDOT:PSS/P3HT:PCBM/TiO 2 /ITO‐coated PET (P4), and Ag/PEDOT:PSS/P3HT:PCBM/ZnO/ITO‐coated PET (P5). The current‐voltage analysis of the prepared devices confirmed that the fabricated devices exhibit photovoltaic characteristics. The power conversion efficiencies (PCEs) of photovoltaic devices P1, P2, P3, P4, and P5 are ∼3.56%, ∼2.03%, ∼1.56%, ∼3.19% and ∼3.04% respectively. The flexible device P1 exhibits a higher PCE value due to an effective ETL layer employing TiO 2 /ZnO. The addition of organic polymers P3HT:PCBM, contributes to the growth of the charge carrier density due to the electron‐hole pair generation at the interface between the PCBM and P3HT layers. Interestingly, a flexibility study was carried out on the P1 photovoltaic device; the device was bent to 80°, 90°, 110°, and 150°. The PCE of device P1 remained unaffected by bending at various angles, demonstrating its compatibility with wearables.
Manisha et al. (Mon,) studied this question.