The effect of absorber stoichiometry in (Ag,Cu)(In,Ga)Se2 (ACIGS) solar cells with bandgaps (Eg) > 1.40 eV is studied on a large sample set. It confirmed that moving away composition from ternary AgGaSe2 by simultaneous reduction Ga and Ag content widens the chalcopyrite single-phase region thereby reduces amount ordered vacancy compounds (OVCs). As consequence, distortion current−voltage chara...

4,4-Difluoro-4-bora-3a,4a-diaza-s-indacene (BODIPY) based BOD-Z-EN compound was used as an interfacial organic layer to fabrication of Au/BOD-Z-EN/n-Si/In diode. The electrical parameters diode such ideality factor (n), barrier height (?b) and series resistance (Rs) have been investigated through current–voltage (I–V) studies at dark under various illumination intensities understand the effect ...

In this study, natural dye sensitisers derived from ketum (Mitragyna speciosa-MS), spinach (Spinacia oleracea-SO), curry (Murraya koenigii-MK), papaya (Carica papaya-CP), and henna (Lawsonia inermis-LI) were investigated for dye-sensitised solar cells (DSSCs). Ultraviolet-Visible Spectroscopy (UV-Vis), Fourier Transform Infrared spectroscopy (FTIR), Open-Circuit Voltage Decay (OCVD) Current to ...

We demonstrate reduced surface recombination velocity (SRV) and enhanced power-conversion efficiency (PCE) in mixed-cation mixed-halide perovskite solar cells by using (3-aminopropyl)trimethoxysilane (APTMS) as a passivator. show the APTMS serves to passivate defects at surface, while also decoupling from detrimental interactions C60 interface. measure SRV of ?125 ± 14 cm/s, concomitant increas...

We fabricated hydrogenated amorphous silicon/polyaniline n–i–p heterojunction solar cells incorporating a doped, hole conducting polyaniline (PANI) layer. The cells were prepared by spin-casting differing polyaniline dispersions corresponding to film conductivities ranging from 10 2 to 10 S/m. The open-circuit voltages VOC of the cells ranged from 0.5–0.7 V. While these open-circuit voltages ar...

A simulation study of a Cu(In1 - xGax)Se2 (CIGS) thin film solar cell has been carried out with maximum efficiency of 24.27 % (Voc = 0.856 V, Jsc = 33.09 mA/cm(2) and FF = 85.73 %). This optimized efficiency is obtained by determining the optimum band gap of the absorber and varying the doping concentration of constituent layers. The Ga content denoted by x = Ga/(In + Ga) is selected as 0.35 wh...

In this paper, we reported that ZnO nanoparticles (NPs) film modified with C60 pyrrolidine tris-acid ethyl ester (PyC60) was used as cathode buffer layer in inverted polymer solar cells. The resultant device with a blend of PTB7:PC71BM as photoactive materials exhibited an open-circuit voltage (Voc) of 0.753 V, a short-circuit current (Jsc) of 16.04 mA cm , a fill factor (FF) of 72.5%, and an o...

A new and novel organic π-conjugated chromophore (named as RCNR) based on fumaronitrile-core acceptor and terminal alkylated bithiophene was designed, synthesized and utilized as an electron-donor material for the solution-processed fabrication of bulk-heterojunction (BHJ) small molecule organic solar cells (SMOSCs). The synthesized organic chromophore exhibited a broad absorption peak near gre...

CuInS2 quantum dots (QDs) were deposited onto TiO2 nanorod arrays for different cycles by using successive ionic layer adsorption and reaction (SILAR) method. The effect of SILAR cycles on the light absorption and photoelectrochemical properties of the sensitized photoelectrodes was studied. With optimization of CuInS2 SILAR cycles and introduction of In2S3 buffer layer, quantum dot-sensitized ...