We value your feedback! Please complete the form below so that we can tailor our services to your specific needs.
The invention relates to a chalcopyrite thin-film solar cell comprising a CIS absorber layer (14), a buffer layer (16) directly applied onto the CIS absorber layer and a ZnO-containing window...
WhatsApp: +86 18221755073
iron from the various roasted chalcopyrite concentrations with the sulphuric acid aqueous solution are summarized in Table 2. Results indicate that the decomposition of chalcopyrite in the concentrate was relatively weak at roasting temperatures of 400° C, and 450°C for 1-4 hours, and copper dissolution rates from the
WhatsApp: +86 18221755073
The same constant potential of − 1.25 V was applied and the concentration of CuCl 2 was systematically increased in a 50 mM InCl 3 bath, and the composition of Cu:In in the film was examined in each case by stripping voltammetry as shown in Fig. 2. It was concluded from this experiment that a 1:1 Cu/In ratio was obtained for a 10/50 mM bath ...
WhatsApp: +86 18221755073
Figure 2 Chronoamperometry formation of Cu-In-S compounds from solution containing 5 ml of 0.1 M copper acetate, 5 ml 0.1 of M InCl 3 and 150 of ml 0.1 M sodium thiosulphate at 1.0 V at different ...
WhatsApp: +86 18221755073
Abstract.A survey of the hydrogen concentration distribution in the various layers of chalcopyrite solar cells is presented. Depth profiles were measured by the nuclear reaction analysis method for the glass substrate, Mo back contact, Cu(In,Ga)S2 or Cu(In,Ga)Se2 absorber, CdS buffer, and ZnO window layer. We find that hydrogen is present in all layers in concentrations exceeding …
WhatsApp: +86 18221755073
This paper reviews the state of the art in using electrodeposition to prepare chalcopyrite absorber layers in thin film solar cells. Most of the studies deal with the direct preparation of Cu(In,Ga)Se 2 films, and show that the introduction of ... which shows the considerable decrease in carrier concentration with HT in Cu-poor CuInSe 2, and ...
WhatsApp: +86 18221755073
Aluminum-based chalcopyrite materials have attracted attention because of the wide controllability range of their material properties and potential for use in energy-conversion devices. Herein, CuAlSe2-based thin-film growth and solar cell device properties are discussed. Ternary CuAlSe2 thin films are relatively unstable and decompose weeks after film growth, …
WhatsApp: +86 18221755073
This paper reviews the state of the art in using electrodeposition to prepare chalcopyrite absorber layers in thin film solar cells. Most of the studies deal with the direct preparation of Cu(In,Ga)Se 2 films, and show that the introduction of
WhatsApp: +86 18221755073
A decrease in the alkali metal concentration in CIAS films with increasing Al concentration is observed, indicating that the formation energy of alkali-metal substitutional defects on the Cu site is high, and/or Al-related …
WhatsApp: +86 18221755073
The chalcopyrite film of the present invention has stoichiometric composition, and electrical characteristics such as p-n conduction type, carrier concentration and the like are controlled. A I-III-VI 2 chalcopyrite semiconductor film containing a Group VII element as a dopant, and methods to produce such a chalcopyrite film are provided.
WhatsApp: +86 18221755073
These specific films were characterized by the presence of a high density of sub-micron plate-like crystallites. EDS measurements (26.27 at.% Cu, 25.10 at.% In, 0.87 at.% Ga, and 47.76 at.% Se) indicated that the Se concentration was still well below 50 atomic percent and that virtually no gallium was present in the near-surface region of the film.
WhatsApp: +86 18221755073
Chalcopyrite Cu(In,Ga)(Se,S) 2 material system has been extensively investigated for solar cell applications since its parent material CuInSe 2 (CIS) was first synthesized in 1953 [1], [2].Their adjustable direct bandgap and high absorption coefficient make the chalcopyrites ideal absorber materials for thin film solar cells [2], [3], and power conversion efficiencies of ~ 15% …
WhatsApp: +86 18221755073
Chalcopyrite is a mineral that serves as a primary source for copper production, constituting about 70% of the world's copper reserves. It has a crystal structure similar to sphalerite and exhibits …
WhatsApp: +86 18221755073
Previous Raman studies on CIS films grown by CSP report an intense new peak at 182 cm À1, which is a finger print of sphalerite CIS phase. This peak is located at the slightly higher energy side ...
WhatsApp: +86 18221755073
Alkali elements, specifically sodium (Na), are key materials to enhance the energy conversion efficiencies of chalcopyrite and related thin-film photovoltaic solar cells. Recently, the effect of potassium (K) has also attracted attention because elemental K has unique effects different from Na as well as a similar beneficial effect in improving device performance. In this …
WhatsApp: +86 18221755073
1.. IntroductionThe loss of indium and gallium during so-called two-step growth processes is often reported as a key problem for the application of chalcopyrite thin film absorbers (e.g. CuInSe 2 and CuGaSe 2) in solar cell devices [1], [2], [3].In these growth processes the formation of the desired chalcopyrite material occurs during a separate thermal treatment step …
WhatsApp: +86 18221755073
With a significant performance increase in the last three years, leading to solar cells yielding up to 21.7% efficiency [4] and recent reports of a 22.3% cell [5], chalcopyrite Cu(In,Ga)Se 2 absorbers present the highest efficiencies among all types of thin-film solar cells. A 3-stage co-evaporation process has been established for the deposition of high-performance Cu(In,Ga)Se …
WhatsApp: +86 18221755073
Disclosed is a method for manufacturing a chalcopyrite thin-film solar cell wherein adhesion between an electrode layer and a light absorption layer composed of a chalcopyrite compound is good, and the multilayer structure is stable even when the concentration of an alkali metal-containing liquid constituting an alkali layer is relatively high and no problem is caused in …
WhatsApp: +86 18221755073
It has been found previously that the electrical activity of grain boundaries in chalcopyrites, i.e. their defect concentration depends on the texture of the film: the usual {112} tet texture shows reduced luminescence yield and negative band bending at the grain boundaries, while films with a predominant {220} / {204} tet texture show no reduction in luminescence …
WhatsApp: +86 18221755073
Chalcopyrite (CuFeS 2) is the most abundant copper-containing resource in the earth and is also widely distributed in solid wastes and secondary resources.Biohydrometallurgy (bioleaching) is considered as a promising minerals processing and extractive metallurgy technology because of its environmental and economic advantages over the conventional …
WhatsApp: +86 18221755073
Chalcopyrite-based solar cells have reached an efficiency of 23.35%, yet further improvements have been challenging. Here we present a 23.64% certified efficiency for a (Ag,Cu) (In,Ga)Se 2...
WhatsApp: +86 18221755073
Perspectives of chalcopyrite-based CIGSe thin-film solar cell: a review. Perspectives of chalcopyrite-based CIGSe thin-film solar cell: a review. Velumani Subramaniam. ... Performance Analysis on the Effect of Doping Concentration in Copper Indium Gallium Selenide (CIGS) Thin-film Solar Cell. 2015 • Rasel Ahmed. Download Free PDF View PDF.
WhatsApp: +86 18221755073
Chalcopyrite semiconductors have attracted widespread atten-tion for use in thin-film solar cells. Solar cell technologies using I-III-VI 2 chalcopyrite semiconductors have made rapid pro-
WhatsApp: +86 18221755073
The chalcopyrite structure, characterized by its tetragonal crystal system, confers a range of desirable properties, including semiconducting behaviour, high thermal stability, and distinct …
WhatsApp: +86 18221755073
The copper diffusion rate through the chalcopyrite passive film is in fact the rate-determining step, i.e. slow step, in the chalcopyrite leaching process (Ghahremaninezhad et al., 2013; Olvera et ...
WhatsApp: +86 18221755073
The CIGS thin film hetero-junction solar cell based on the chalcopyrite p-type absorber layer Cu(In 1-x Ga x)Se 2 is a promising option in industrial productivity due to its lower manufacturing cost and higher efficiency (Rampino et al. 2015; Powalla and Dimmler 2001; Minemoto et al. 2003).Although the CIGS solar cell is recorded as a highly efficient (~21.7 %) …
WhatsApp: +86 18221755073
A survey of the hydrogen concentration distribution in the various layers of chalcopyrite solar cells is presented. Depth profiles were measured by the nuclear reaction analysis method for the glass substrate, Mo back contact, Cu(In,Ga)S2 or Cu(In,Ga)Se2 absorber, CdS buffer, and ZnO window layer. We find that hydrogen is present in all layers in concentrations exceeding the solubility of ...
WhatsApp: +86 18221755073
Copper indium gallium selenide (CIGS)-based solar cells have received worldwide attention for solar power generation. CIGS solar cells based on chalcopyrite quaternary semiconductor CuIn 1-x GaxSe 2 are one of the leading thin-film photovoltaic technologies owing to highly beneficial properties of its absorber, such as tuneable direct band gap (1.0–1.7 eV), …
WhatsApp: +86 18221755073
The silver concentration of the test solutions was between 0 and 10 ppm. In situ Mott–Schottky analysis and X-ray photoelectron spectroscopy (XPS) were respectively applied to study chalcopyrite's semiconductor properties and …
WhatsApp: +86 18221755073
Herein, a ternary alloy AgInTe 2-based thin film solar cell has been studied for high efficiency.AgInTe 2 (AIT) is one of the I-III-VI 2 triune chalcopyrite mixture which has got a special animus because of its application to photovoltaic solar cells and optical devices [14,15].Some researchers have focused on AgInTe 2 and the majority of which belongs to elastic constants …
WhatsApp: +86 18221755073
