CIS Plastic Solar Cells (original) (raw)
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Polymer - CuInS2 hybrid solar cells obtained by an in-situ formation route
2010 35th IEEE Photovoltaic Specialists Conference, 2010
Bulk heterojunction hybrid solar cells with a CuInS2-poly(pphenylene vinylene) active layer are presented in this contribution. The acceptor phase is obtained in-situ within the matrix of the polymer by the reaction of the metal ions with the decomposition products of a sulfur source (thioacetamide) using a moderate heating step. As prepared donor-acceptor nanocomposites were used as active layers in hybrid solar cells. Structural characterization was performed using XRD and TEM methods, solar cell performance and optical properties were explored by j-V-, absorbance-and IPCEmeasurements.
CuInSe 2 (CIS) as A light Absorption Layer of Photovoltaic Solar-Cells
Arrested precipitation methode used to synthesize CuInSe 2 (CIS) nanocrystals were added to a hot solvent with organic capping ligands to control nanocrystal formation and growth. CIS thin films deposited onto Soda-Lima Glass (SLG) substrate by spray-coat, then selenized in Ar-atmosphere to form CIS thin films. PVs were made with power conversion efficiencies of 0.631% as-deposited and 0.846% after selenization, for Mo coated, under AM 1.5 illuminations. (XRD) and (EDX) it is evident that CIS have chalcopyrite structure as the major phase with a preferred orientation along (112) direction and Cu:In:Se nanocrystals is nearly 1:1:2 atomic ratio.
High efficiency CuInSe2 based heterojunction solar cells: Fabrication and results
Solar Cells, 1986
A process for fabricating CuInSe:/CdS solar cells is described. A data set of 202 substrates each containing 12 cells from 129 separate deposition runs is used to examine the processing parameters for fabricating high efficiency cells. The data show a broad range of CuInSe: compositions over which high efficiency cells can be made. The use of a thin CdS layer, less than 2 pm in thickness, can increase the short-circuit current by more than 3 mA cm-:. High efficiency devices have also been made on low cost sodalime glass. Air heat treatments at 200 °C for between 8 and 60 h are required to optimize the output of the CuInSe:/CdS cells. 0379-6787/86/$3.50
Physica E: Low-dimensional Systems and Nanostructures, 2016
In this work, ternary CuInSe 2 (CISe) chalcopyrite nanocrystallites efficiently passivated by a novel combination of capping agents viz: aniline and 1-octadecene during chemical route synthesis were dispersed in conducting polymer matrix poly(3-hexylthiophene) (P3HT). By varying the composition and concentration of the ligands, the properties of the resulting CISe nanocrystallites and its corresponding polymer nanocomposites thus could be tailored. The structural, morphological and optical studies accomplished by various complimentary techniques viz. Transmission Electron Microscopy (TEM), Contact angle, Photoluminescence (PL) and Raman have enabled us to compare the different hybrid organic (polymer)-inorganic nanocomposites. On the basis of aniline-octadecene equilibrium phase diagram, the polydispersity of the CISe nanocrystals could be tuned by using controlled variations in the reaction conditions of nucleation and growth such as composition of the solvent and temperature. To the best of author's knowledge, the beneficial effects of both the capping agents; aniline and octadecene contributing well in tandem in the development of large-sized (100-125 nm) high quality, sterically-and photo-oxidative stable polycrystalline CISe and its corresponding polymer (P3HT):CISe composites with enhanced charge transfer efficiency has been reported for the first time. The low-cost synthesis and ease of preparation renders this method of great potential for its possible application in low-cost hybrid organic-inorganic photovoltaics.
2011
In this contribution we present an in situ method for the preparation of CuInS 2 -poly(3-(ethyl-4butanoate)thiophene) (P3EBT) nanocomposite layers and their application in nanocomposite solar cells. A precursor solution containing copper and indium salts, thiourea and the conjugated polymer was prepared in pyridine, which was coated onto glass/ITO substrates followed by a heating step at 180 1C. The heating step induced the formation of the CuInS 2 nanoparticles homogeneously dispersed in the conjugated polymer matrix. The formation of the nanocomposite was investigated in situ by X-ray scattering techniques and TEM methods showing that nano-scaled CuInS 2 was formed. By addition of small amounts of zinc salt to the precursor solution, zinc containing CuInS 2 (ZCIS) was formed. ZCIS-P3EBT active layers exhibited higher V OC than CuInS 2 -P3EBT layers and showed efficiencies of about 0.4%. Additionally the stability of the solar cells was tested over a time scale of 172 h.
Journal of Materials Chemistry, 2008
We report the Cu + chelated poly-alkoxythiophene (P3MEET) enhancement of a solar cell device consisting of a P3HT/PCBM heterojunction system. Compared to the reference P3HT/PCBM system, a consistent increase of conversion efficiency of 0.9% via an apparent increase of incident-photon-to-current conversion efficiency (IPCE) is achieved upon optimizing the ratio of P3MEET-Cu + : P3HT : PCBM to 1 : 9 : 6 by weight, in which 7.5 mol% of CuBr is added upon synthesizing P3MEET-Cu +. The results, in combination with relevant data gathered from atomic force microscopy, cyclic voltammetry, and electrochemical impedance spectra, lead us to conclude that the match in redox potential and increase of ordering of the film upon doping P3MEET-Cu + play two key roles in enhancing the performance.
Synthesis of CIS (CuInSe2) Based Materials for Solar Applications
Journal of Chemistry
Nanopowders of copper indium diselenide were produced with five different organic solvents: ethylenediamine, triethanolamine, oleylamine, oleic acid, and polyetheramine. We successfully synthesized pure CIS nanopowders at a temperature of 240°C at three different durations of 10 h, 20 h, and 40 h with a one-step process. This shorter time method offers important cost advantages in manufacturing. Polyetheramine and oleic acid were used for the first time in literature for CIS synthesis in an autoclave.
The CuInSe2 (CIS) nanocrystals are synthesized by arrested precipitation from molecular precursors are added to a hot solvent with organic capping ligands to control nanocrystal formation and growth.CIS thin films deposited onto glass substrate by spray coating, then selenized in Aratmosphere to form CIS thin films.PVs were made with power conversion efficiencies of 0.631% as deposited and 0.846% after selenization, for Mo coated, under AM 1.5 illumination. X-ray diffraction (XRD) and energy dispersive spectroscopy (EDS) analysis it is evident that CIS have the chalcopyrite structure as the major phase with a preferred orientation along (112) direction and the atomic ratio of Cu : In : Se in the nanocrystals is nearly 1 : 1 : 2.