Harnessing light energy with a planar transparent hybrid of graphene/single wall carbon nanotube/n-type silicon heterojunction solar cell

Chemical Bath Deposition of p-Type Transparent, Highly Conducting (CuS)x:(ZnS)1–x Nanocomposite Thin Films and Fabrication of Si Heterojunction Solar Cells

“…With a demonstrated VOC of 535 mV, the VOC of our p-(CuS)x:(ZnS)1-x / n-Si device is comparable to that of the best-in-class single-walled carbon nanotube / Si (530mV) 75 (where the reported VOC of SWCN/Si devices is within the range of 370-530mV) [42][43][44]46 and graphene / Si (540mV) 50 PV devices (where the reported VOC of graphene /Si device is within the range of 359-540mV). [47][48][49] Given that anti-reflection or light trapping was not considered in this cell, as can be seen from the reflectance spectrum in Figure 6c, various promising improvements can be envisioned.…”

“…However, their fabrication process typically requires vacuum processing. Carbon nanotubes and graphene have also been employed and open circuit voltages up to 550 mV have been observed. − Here, we investigated chemical-bath-deposited-(CuS) x :(ZnS) 1– x as a hole-selective contact to n-Si. Several proof-of-concept photovoltaic (PV) devices based on p-(CuS) x :(ZnS) 1– x /n-Si were fabricated, and observed optimal 1 sun V oc value of 535 mV and J sc value 21 mA/cm 2 , which suggests the potential for this material in photovoltaic devices and other optoelectronic devices.…”

Electrophoretic deposition of carbon nanotubes: recent progress and remaining challenges

“…Mg(NO 3 ) 2 is commonly used to stabilise CNT suspensions for EPD; however, the inorganic contamination can block the catalytic sites and limit electron transfer to tri-iodide (I 3 − ) ions [178]. Alternatively, the combination of CNTs with RGO can produce composite coatings with a high conductivity and catalytic activity [163], for similar reasons as the hybrid EDLC electrodes discussed above. Further improvements can be obtained by adding a metal catalyst; for example, doping with Au nanoparticles increased the PCE from 6.2% to 8.8% for CNT/Au hybrid films [163].…”

“…EPD coatings on an, in principle re-usable, stainless steel anode can be transferred to a transparent substrate; for example, EPD CNT films hot-pressed onto to a poly(ethylene terephthalate) (PET) substrate showed strong adhesion, and the conductivity remained stable after >10,000 cycles of repeated bending [113]. Hybridisation, by co-deposition, can combine the areal coverage of graphene, with the network connectivity of CNTs, for improved TCF performance [163,164]. In an n-type Si heterojunction solar cell, PCE was nearly doubled for the hybrid compared to control devices using pure CNT or graphene films as current collectors [163].…”

Porous Fe@C Composites Derived from Silkworm Excrement for Effective Separation of Anisole Compounds

“…In order to compare the adsorption capacity of MA molecules on the new adsorbents, adsorption isotherms of MA were measured on SE-C, Fe@C composites, and several typical adsorbents including two MOFs and a commercial activated carbon XFNANO C-AC (Table 1). 51 The experimental data were also fitted using Langmuir and Freundlich models given by eqs 8 and 9, 52 whereas the results are shown in Figure 5A,B and the fitted parameters are listed in Table 3.where Q m and Q e (mmol/g) are the maximum and equilibrium adsorption capacity and K L (L/mmol) is a constant related to the adsorption energy; K F (mmol (1–1/ n ) /g·L 1/ n ) is defined as the adsorption or distribution coefficient, and n is an indicator of the adsorption intensity.…”