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Search for "PTB7" in Full Text gives 5 result(s) in Beilstein Journal of Nanotechnology.
CdSe/ZnS quantum dots as a booster in the active layer of distributed ternary organic photovoltaics
Beilstein J. Nanotechnol. 2024, 15, 144–156, doi:10.3762/bjnano.15.14
- PTB7-Th/FOIC based OSCs [69]. Perovskite cells with PbS QDs reached more than 10% [70][71]. For other types of QDs, perovskite cell technologies are also intensively developed [72][73]. QD-assisted organic cells also achieve better and better (even 15%) performance [68][69]. Nevertheless, understanding
Dual-heterodyne Kelvin probe force microscopy
Beilstein J. Nanotechnol. 2023, 14, 1068–1084, doi:10.3762/bjnano.14.88
- blend. As in our previous works, we used the PTB7:PC71BM tandem. We refer the reader to our former reports [4][11] and review articles for a detailed introduction to KPFM on organic heterojunctions [20], and to the specificities of the PTB7:PC71BM blend. We limit ourselves here to recall that in these
- in the sample. Clearly, this parameter also has an impact on the SPV decay dynamics. However, in the latter case, the slower trap release processes are actually the limiting factor. In particular, in the case of the PTB7:PC71BM system, it is now well-established that isolated PC71BM clusters act as
- our previous pp-KPFM measurements on PTB7:PC71BM blends [4][11], which showed that the SPV decay time constant can vary from tens of µs to several hundreds of µs, depending on the morphology and phase composition. Doing so, we maximized our chances to generate a time-dependent SPV (which first
Implementation of data-cube pump–probe KPFM on organic solar cells
Beilstein J. Nanotechnol. 2020, 11, 323–337, doi:10.3762/bjnano.11.24
- PTB7 and PC71BM is subsequently investigated by recording point-spectroscopy curves as a function of the optical power at the cathode and by mapping 2D time-resolved images of the surface photovoltage of the bare organic active layer. Keywords: bulk heterojunctions; Kelvin probe force microscopy (KPFM
- less data points to probe the parts of the time-domain where the SP evolves more slowly. Organic BHJ Solar Cells In this work, PTB7:PC71BM BHJ photovoltaic thin films have been used as test samples (Figure 3) for pp-KPFM experiments. In the following, a few concepts of organic photovoltaics are
- charges. The latter can eventually reach the collection electrodes of the device. Here, the low-bandgap polymer PTB7 was used as the donor and the fullerene derivative PC71BM as the acceptor. In the BHJ configuration [26], the D and A materials should form two interpenetrated networks phase-segregated at
Nontoxic pyrite iron sulfide nanocrystals as second electron acceptor in PTB7:PC71BM-based organic photovoltaic cells
Beilstein J. Nanotechnol. 2019, 10, 2238–2250, doi:10.3762/bjnano.10.216
- of these NCs incorporated into the PTB7:PC71BM active layer of bulk-heterojunction ternary organic photovoltaic (OPV) cells. The OPV devices are fabricated with the direct configuration glass/ITO/PEDOT:PSS/PTB7:PC71BM:FeS2/PFN/FM. The Field’s metal (FM) is a eutectic alloy composed of 32.5% Bi, 51
- PTB7. With respect to the reference device (without FeS2), a 21% increase in the power conversion efficiency (PCE) is observed for OPVs with 0.5 wt % FeS2, such that the PCE of the OPVs is enhanced from 5.69 to 6.47%. According to the Kruskal–Wallis and Mann–Whitney statistical tests, all OPV devices
- follow the same trend. Keywords: iron disulfide; nanoparticles; organic photovoltaic cells (OPVs); PTB7; pyrite; Introduction Iron disulfide (FeS2) is a natural earth-abundant and nontoxic material with possible applications in lithium batteries, transistors or photovoltaic (PV) devices [1][2
Synthesis and applications of carbon nanomaterials for energy generation and storage
Beilstein J. Nanotechnol. 2016, 7, 149–196, doi:10.3762/bjnano.7.17
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