Application of Fe-doped SnO2 nanoparticles in organic solar cells with enhanced stability

Weak Localization in Polycrystalline Tin Dioxide Films

“…and attracts tremendous attention among scientists and manufacturers of optoelectronic devices due to the unique coexistence of high conductivity and optical transparency in the visible range of electromagnetic spectrum [1][2][3]. Combination of the excellent electrical and optical properties of tin dioxide are exploited for such applications as transparent electrodes in solar cells, flat-panel displays, touch-sensitive control panels, coatings for energy-conserving windows in ovens and antifogging windows in airplanes, light-emitting diodes, UV sensors, highly active photocatalysts [3][4][5][6][7][8][9][10]. The high sensitivity of tin dioxide electrical conductivity due to the interaction processes of its surface with the gas molecules is utilized for the fabrication of gas, chemical and humidity sensors [11,12].…”

Nontoxic pyrite iron sulfide nanocrystals as second electron acceptor in PTB7:PC71BM-based organic photovoltaic cells

“…Wang et al [44], used the nonfullerene acceptor molecule ITIC (2,2′-[[6,6,12,12-tetrakis(4-hexylphenyl)-6,12-dihydrodithieno[2,3-d:2′,3′-d′]-s-indaceno[1,2-b:5,6-b′]dithiophene-2,8-diyl]bis[methylidyne(3-oxo-1H-indene-2,1(3H)-diylidene)]]bis[propanedinitrile]) with PBDB-T (poly[[4,8-bis[5-(2-ethylhexyl)-2-thienyl]benzo[1,2- b :4,5- b ′]dithiophene-2,6-diyl]-2,5-thiophenediyl[5,7-bis(2-ethylhexyl)-4,8-dioxo-4 H ,8 H -benzo[1,2- c :4,5- c ′]dithiophene-1,3-diyl]]) and PC 71 BM to form efficient electron-transport pathways, achieving an enhanced PCE of 10.2% as compared to 9.2 and 8.1% for the binary PBDB-T:ITIC and PBDB-T:PC 71 BM devices. The addition of magnetic oxide nanoparticles to the OPV P3HT:PC 70 BM active layer has improved the lifetime and the stability of these devices with an efficiency of ≈3% [45]. On the other hand, 5 wt % Fe 3 O 4 NPs doped into the P3HT:PCBM blend increased the PCE from 1.09 to 2.22% [46].…”

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

“…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.…”

“…Several research groups have reported that PCE and stability improvement has been achieved by introducing small amounts of magnetic NPs (such as spinel ferrites) in cells active layers 5,[12][13][14]31,32 . The possible explanation to the observed improvement points in two directions: one proposition suggests that the dipole interactions from magnetic NPs induce a coercive electric field, which can contribute to the improvement of the photovoltaic parameters 13,32,33 ; another proposition argues that the presence of magnetic moments within the active layer increases the number of excitons that are dissociated into charge carriers.…”