Unsw takes out czts efficiency world record pv magazine. This is the highest efficiency so far obtained for czts thin film based solar cell using wet chemistry silar technique. In this work, numerical simulations were performed on structures based on czts absorber layer, zno window layer, and transparent conducting layer nito with. Physical parameters used for numerical analysis of czts solar cells. I feel sorry for any new graduate student beginning a project from a web of science search for kesterite or czts solar cell with 1155 results 28th may 2015. A strong dependency has been observed on buffer layer thickness for the performances of czts solar cell. This czts is the filling that is the heart of solar cells, says free. Here, substitution of cd improves the bulk quality of czts, resulting in a photocurrent enhancement of 4 ma cm. It has been varied between 30 and 100 nm with a fixed doping concentration at 1e17 and 1e18 cm. We performed centrifugation to screen the asmilled czts and obtain nanocrystals.
To increase the performance of cztsbased solar cell, buffer layer optimization is still an obstacle. The effects of an ultrathin zno intermediate layer deposited at the cztsmo interface on czts solar cell performance have been investigated in this work. Cu2znsns4 czts is a promising candidate material for photovoltaic applications. Solar radiation is one of the most abundant forms of energy available on the planet, but harnessing this energy has been hampered by the high costs of current solar technologies.
Copper zinc tin sulfidebased thinfilm solar cells wiley. If you continue browsing the site, you agree to the use of cookies on this website. Pdf effect of czts parameters on photovoltaic solar cell from. The first thing to consider in choosing the best possible solar cell. Synthesis of czts nanoparticles for lowcost solar cells. Proposition of an environment friendly triple junction. Pdf development of a czts solar cell with cds buffer. Highenergy deposition methods for czts and cts solar cells. The absorber layer thickness is a crucial parameter on the performance of thin film solar cells. Beginning with an overview and historical background of copper zinc tin sulphide czts technology, subsequent chapters cover properties of czts thin films, different preparation methods of czts thin films, a comparative study of czts and cigs solar cell, computational approach, and future applications of czts thin film solar modules to both groundmount and rooftop installation. The effect of buffer layer cds and zns thickness on the electrical performances of czts solar cell is analyzed in this part. A czts solar cell device having conversion efficiency of 0. A copperzinctinsulphide czts based solar cell of mocztscdszno is simulated using scaps.
Ultrathin cu2znsns4 solar cell by pulsed laser deposition. Some czts layers were directly spray onto fluorinedoped tin oxide substrats. However, cztsbased solar cells suffer from low efficiency because of poor crystal quality, which is partly caused by secondary phase formation during synthesis. Conclusion in the czts solar cell development, significant progress on this relatively new research area has been achieved in recent years. Each of the first three quarters of the subcontract has been detailed in quarterly reports. However, integrating czts with silicon is challenging due to siliconincompatible processing. Na ions were diffused quite deeply from slg substrate into the czts absorber layer. The fabrication of highquality layers of czts and cts remains a. Towards highefficiency czts solar cell through buffer. An additional back surface passivation layer of sns is added in the modified cell configuration. Improving cu2znsns4 czts solar cell performance by an. Wo2077417a1 czts thinfilm solar cell, and method for. Study of czts and cztsse solar cells for buffer layers. Czts thin film solar cells the science behind the research kesterite cu 2 znsns 4 czts materials have direct band gap energies ranging from 1.
However, the practical aspects of controlling deposit morphology and composition have not been significantly addressed because of the complex coplating variables that still need to. Greenb and yexiang liua aschool of metallurgical science and engineering, central south university, changsha 410083, china. In this regard, cd alloying shows promise for dealing with some of these problems. A thin film solar cell device having the architecture nialal. Influence of solvent on the properties of czts nanoparticles core. Controllable multinary alloy electrodeposition for thin. Efficiency for czts thin film solar cells by using nonvacuum based fabrication methods. Growth of cztsbased monograins and their application to membrane solar cells. The cigs or cztsbased thinfilm solar cell causes no interlayer delamination and has improved durability and photoelectric conversion efficiency. Japans solar frontier, with ibm and tokyo ohka kogyo, have previously achieved 12. Impact of molybdenum out diffusion and interface quality. A copperzinctinsulphide cztsbased solar cell with a modified ce3ll configuration of mosnscztssns2zno is simulated using scaps.
In this simulation, the czts thickness was varied from 0. Solutions to the issues of reproducibility and microparticulate ejection often encountered with pld are proposed. View enhanced pdf access article on wiley online library html view download pdf for offline viewing. In this work, a beyond 11% efficient cdalloyed czts solar cell is achieved, and the effects of cdalloying and mechanism underpinning the performance improvement have been investigated. Znoiznocds czts moslg with a rf sputtered cds buffer layer was reported in this study. A study of czts thin films for solar cell applications. Interfacial properties of czts thin film solar cell.
Growth of cztsbased monograins and their application to. This device, represented by more than 40 worldwide patents, comprises tiny silicon spheres. An overview of solar cell technology mike mcgehee materials science and engineering global climate and energy projectglobal climate and energy project center for advanced molecular photovoltaics precourt institute stanford university konarka nanosolar. The ink then can be painted onto a surface and combined with other coatings to form a solar cell. An overview of solar cell technology stanford university. Cdfree czts thin film solar cell was fabricated with the conversion efficiency of 0. Nontoxic and cheap thinfilm solar cells for zeroenergy buildings worlds highest efficiency rating achieved for czts thinfilm solar cells. The obtained results from zns czts based solar cells were displayed in figure 8 and summarized in table 4. Beyond 11% efficient sulfide kesterite cu2znxcd1xsns4.
After spraying a precursor solution of zno directly onto fluorinedoped tin oxide fto substrats, czts thin layers were sprayed onto layers of zno to forme a pn junction. The interfacial properties of device were characterized by crosssectional sem and crosssectional hrtem. Copper zinc tin sulfide based thin film solar cells. Solar frontier breaks czts cell efficiency record partnering with ibm and tok, the japanese cis thinfilm module maker has achieved a worldrecord of. Also provided is a method for fabricating a cigs or cztsbased thinfilm solar cell by which conversion of molybdenum back electrode layer to molybdenum diselenide is controlled. The same group of researchers later on improved the efficiency of czts thin films based solar cell using similar approach to 1.
Worlds highest efficiency rating achieved for czts thin. However, users may print, download, or email articles for individual use. In this work, we fabricated czts nanocrystal inks by a wet ball milling method, with the use of only nontoxic solvents, followed by filtration. Czts have three major advantages over the commercially available solar cells of today. Environmentally friendly earthabundant cdfree cu2znsns4 czts solar cells have recently achieved increasing power conversion efficiency by using znsno as the buffer layer. Study of thin film solar cells with optimal values using the optimized parameters obtained in previous sections, we get better performances in the solar cells outputs. Czts was first created in 1966 and was later shown to exhibit the photovoltaic effect in 1988. Light trapping mechanism is essential which have been explored and improved the performance of the solar. At last, the development prospect of cu2znsns4 thin film solar cells was commented. Electrodeposition ed technology is a lowcost industrial candidate for solar cell fabrication. Pdf numerical simulation of czts thin film solar cell.
Towards highefficiency czts solar cell through buffer layer. This research work presents a numerical simulation of czts based solar cell by using one dimensional solar cell simulation. Cdfree cu2znsns4 solar cell with an efficiency greater. Fabrication of cu2znsns4 czts nanoparticle inks for. Thin films of zno, czts cu2znsns4 and znoczts were prepared by spray pyrolysis deposition spd. Here, we report a cdfree czts solar cell that exhibits 2019 energy and environmental science hot articles. Preparation and characterization of cu2znsns4 thin films and solar cells. Solar frontier breaks czts cell efficiency record pv. Czts thin film solar cells institute for materials.
Pdf effect of czts parameters on photovoltaic solar cell. Effect of absorber parameters on znsczts based solar cell effect of czts thickness. Us9112075b2 cigs or cztsbased film solar cells and. Thinfilm ftoznoczts solar cells fully deposited by. Czts, a quaternary compound semiconductor based on nontoxic and earth abundant elements cu 2znsns 4, with a band gap of 1. Simulation study to find suitable dopants of cds buffer. A czts thinfilm solar cell achieving a high photoelectric conversion efficiency is provided with a substrate, a metal rearsurface electrode layer formed on the substrate, a ptype czts lightabsorbing layer formed on the metal rearsurface electrode layer, and an ntype transparent conductive film formed on the ptype czts lightabsorbing layer, wherein a dispersion layer of zns small.
We propose a triple junction cbtssecztsacztse solar cell using earth abundant and non. Superstratetype itotio2in2s3c2 znsns4 thin film solar cell was developed. The performance of czts solar cell, a promising candidate in the field of energy production from sunlight, can be improved by optimizing the parameters of most widely used cds buffer layer. If all of it was used to make solar cells, we could generate 0. Consequently, the incorporation of this layer reduces the series resistance and increases. The zno layer inhibits the generation of mos 2 layer and the formation of voids in the czts absorber. Pdf a solar cell is an electronic device which directly converts sunlight into electricity. Enhanced conversion efficiency with reduced cost of thin film solar cell is the primary objective of the scientific community. An improvement in the solar cell efficiency compared to the standard cds buffer based. An sns2 buffer layer is used in simulation instead of the standard cds layer. Development of a czts solar cell with cds buffer layer deposited by. Fundamental properties of solar cells, principles and. A novel and cost effective czts hole transport material.
However, the large open circuit voltage voc deficit remains the key concern. This improvement is attributed to the better charge collection, which may. Champion efficiency of czts thin film solar cell tfsc has reached 8. The presented work is essential because it can contribute to full understanding of the performance of czts solar cell. However, whereas cigs solar cells have reached an efficiency of 22. Czts is a promising photoabsorber as a photocathode for water reduction to produce hydrogen but its performance is often limited by the presence of a high concentration of defects.
In this work, numerical study have been done on the typical czts solar cell structures containing mo thin film as back contact on glass substrate using scaps1d solar cell simulation software. Quantum efficiency and iv curve of the simulated output of czts solar cell is mapped with highest efficiency reported in literature for czts solar cell. Cu2znsns4xsex czts is an important semiconductor with significant potential for applications in the next generation of solar cells. Journal of energy and power engineering 2019 3236. Energy conversion efficiency, costeffectiveness, and longterm durability. Many different solar cell technologies are being developed, for various applications rooftops, solar power plants, satellites, backpacks or clothing, etc. Additionally, for comparison, spiromeotad as an htmbased psc was also fabricated. Light trapping enhancement in thin film silicon solar cell with different back reflector free download abstract. Sce started to develop a spheral solar cell using metallurgical silicon of low purity. Pdf synthesis of czts nanoparticles for lowcost solar cells. Numerical analysis of potential buffer layer for cu2znsns4.