Interplay between silicon surface engineering and optoelectronic properties for highly efficient PEDOT:PSS/Si hybrid heterojunction
摘要
In the present study, the rational design of combining organic semiconductor and inorganic silicon (Si) hybrid heterojunction was analysed for photovoltaic (PV) and photo-detection applications. A detailed comparison of PV performance of such heterojunction with three types of micro-structured Si surface evolved with respect to micro-texturing duration is carried out. The highest PV performance parameters (Jsc = 30.76 mA/cm2, Voc = 0.545 V, FF = 71.9% and PCE = 12.08%) boosted by effective light trapping capabilities (reflectance < 8.5% after polymer coating) is achieved for the 60 min aq. KOH treated Si surface based hybrid solar cell (HSCs) in ‘Ag/PEDOT:PSS/n-Si/In:Ga’ design. The hybrid device also showed promising and stable photodetection properties with responsivity as high as 1426.6 mA/W, noise equivalent power (NEP) of 2.71 × 10− 12 W/