Efficient P3HT:SWCNTs hybrids as hole transport layer in P3HT:PCBM organic solar cells

The effects of solvent treated PEDOT:PSS buffer layer in organic solar cells

“…Each device shows the known spectral response of its bulk heterojunction blend. The P3HT:PCBM based devices has demonstrated a maximum IPCE about 40% at around the wavelengths of 500-550nm [36]. While the PCPDTBT:PCBM based device has two dominant peaks the first one about 30% at around 500nm and the second is about 40% around the wavelength 650nm [37].…”

Organic solar cells: Current perspectives on graphene‐based materials for electrodes, electron acceptors and interfacial layers

“…In other studies, carbon-based non-fullerene nanodiamond (ND), 157 ZnO:CNT, 158,159 SWCNT, [160][161][162] MWCNT, 163,164 CNT 161 and B-CQDs 162 were incorporated into the active layer blend of OSCs, resulting in PCEs of 0.23%, 4.66%, 2.52%, 3.98%, 2.20%, 3.54%, 1.88%, 2.35%, 4.86% and 2.70%, respectively, as shown in Table 8, which outperformed the reference devices. The improvement in device efficiency was ascribed to the increase in optical absorption upon the incorporation of carbon-based materials into the active layer, which enhanced photon harvesting, and hence facilitated the effective generation of excitons.…”

Flexible, Large-Area Organic Solar Cells With Improved Performance Through Incorporation of CoFe2O4 Nanoparticles in the Active Layer

“…The main absorption band is found around the wavelength 520 nm which is atributed to π -π* transition of P3HT conjugated backbone, whereas the two shoulders around 550 and 600 nm are ascribed to the extended conjugated P3HT and the inter-chain stacking of P3HT, respectively; these two bands indicate a well-order structure. The discrete absorption peak around 332 nm is assigned to the PCBM 7,44 . Figure 5 shows a typical current density versus voltage curve (J×V) measured under simulated AM 1.5 solar illumination at 100 mW/cm 2 .…”

“…Recent advances towards improvement of the power conversion efficiency (PCE) of organic solar cells (OSC) have shown that the photovoltaic parameters depend mainly on the morphology of the active layer [1][2][3] , the interfacial layers (electron and hole transporter layer) [4][5][6][7] and the architecture of devices 8,9 .…”

“…The active layer is the most important component of an OSC. In the state of the art, it is composed of two different organic materials (a donor and an acceptor) with offset energy levels form nanometric domains in the bulk-heterojunction (BHJ) [5][6][7] . Experimental realization of this is a challenging task, and the behavior of the organic semiconductors can be hardly predicted in terms of forming interpenetrating phase-separation in BHJ solar cells.…”