Crystalline-Si heterojunction with organic thin-layer (HOT) solar cell module using poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate)(PEDOT:PSS)

We represent the photovoltaic performance of n-type crystalline silicon (n-Si) heterojunction with organic thin-layer (HOT) solar cell module using poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate)(PEDOT:PSS) together with 4,4′-cyclohexylidenebis [N,N-bis(4-methylphenyl) benzenamine] (TAPC) as a protecting layer of PEDOT:PSS for air storage and barium hydroxide, Ba(OH)2 as a hole blocking layer at the rear c-Si/cathode interface, respectively. PEDOT:PSS/n-Si front-junction solar cell showed a power conversion efficiency (PCE) of 13-14% (11-12%) with a short-circuit density, JSC of 29-31 mA/cm2 (25-26 mA/cm2), an open-circuit voltage, VOC of 0.62 V (0.625 V), and a fill factor, FF of 0.72 (0.704) for a 2 × 2 cm2 (4 in.) size device. Solar cell module consisting of ten-units of series-connected 2 × 2 cm2 (4 in.) sized cells exhibited a output power of 0.37 W (7.3 W) with a VOC of 6.1 V (6.2 V), a JSC of 0.084 A (1.78 A), and a FF of 0.712 (0.71). We also confirmed that it worked as a stand-alone photovoltaic system for remote monitoring of wireless camera drive.