The perovskite solar cell psc is a recent contender within the photovoltaic research field. On the basis of the cost problem, we have developed new solar cells based on organic and organicinorganic hybrid materials. Methylammonium ma is one of the main obstacles that hold back the commercialization of perovskite solar cells pscs. Performance and stability of perovskite solar cells by s m istiaque hossain a dissertation submitted to the graduate faculty in partial fulfillment of the requirements for the degree of doctor of philosophy major. Remarkably, such highefficiency perovskite solar cells can be made from polycrystalline materials by solution processing.
Performance and stability of perovskite solar cells iowa state. To improve the charge separation and transport efficiency in perovskite solar cells pscs with a tio2based hybrid mesoscopicplanar architecture, cds and cdscn2h42cl2 are incorporated into the ch3nh3pbi3 active layer through in situ synthesis to prepare cds. Publishers pdf, also known as version of record includes final page, issue and volume numbers. Also, research interest in methyl ammonium lead iodide perovskite solar cells has. Because of the compositional flexibility of perovskites, they can also be tuned to ideally match the suns spectrum.
Interface and composition analysis on perovskite solar cells. Of relevance to any thinfilm solar cell, and to 4terminal tandem cells in particular, is the specifications of its transparent conductor layers. Whenever i was facing a predicament, he was always there. This model is used to study semiconductor physics in pscs. Optimisation and characterisation of alternative hole. The efficiency of solar cells based on perovskites has rapidly increased from an initial promising value of 9% in 2012 to over 22% currently, making this the fastestadvancing solar cell technology. Masters by research thesis, queensland university of technology. The phd project requires skills and qualifications in laser spectroscopy and molecular physics, which will be complemented by training provided in 1.
Centre for hybrid and organic solar energy, department of electronic engineering, university of rome tor vergata, via del politecnico 1, rome 003, italy. The perovskite materials can be used not only as lightabsorbing layer, but also as an electronhole transport layer due to the. Stability is one of the key points for real world application of solar cells and is mainly related to the processes that regulate the energy conversion, both in longterm degradation. Currently, hybrid perovskite solar cells are at 22. Recently, a new class of solar cell called perovskite solar cells has been introduced. When perovskite solar cells were first tried in solar cells in 2009 converted about 3. It yielded predominantly yellow colored hydrated ma. A perovskite solar cell psc is a type of solar cell which includes a perovskite structured compound, most commonly a hybrid organicinorganic lead or tin halidebased material, as the lightharvesting active layer. Perovskite solar cell psc materials a perovskite solar cell, that was first reported by miyasaka et al. Immense interest has been generated in organicinorganic perovskite solar cells pscs due to their favourable attributes. Phd thesis numerical analysis for efficiency enhancement of thin film solar cells author faisal baig supervisor. University of toronto 2017 abstract solar photovoltaics pv offer a sustainable solution to the daunting challenge of meeting the global energy demand. Trpl, in which the sample is excited with a light pulse and the decay of the. Chapter 1 1 1 chapter 1 2 introduction 3 4 5 the organometal trihalide perovskite as light absorber in solar cells has amazed 6 everyone by obtaining in a short time span significant improvements in power 7 conversion efficiency pce.
Rational interfaces design of efficient organicinorganic. High efficiency semiconductor based solar cells thesis of phd. Perovskite solar cells thesis proposal i help to study. New solar cell material perovskite offers both cheap and efficient power. Device physics of organic and perovskite solar cells. Role of the cation in hybrid organicinorganic perovskite. In this thesis, optimisation of planar perovskite solar cells is carried out by the engineering of perovskite film fabrication methods. Fabrication, optimization and portrayal phd thesis. Liquid phase epitaxy the most common of the epitaxy methods is the liquid phase epitaxy, if the target is a fast and costefficient development and production of a less complex hetero. It has been proposed that the ferroelectric polarization of perovskites may affect the electronic performance of pscs.
Wei, rongsheng 2018 modelling of perovskite solar cells. After keeping the sample inside the chamber, cleaning process was done again for three times. Metaloxide based interlayers for organic and perovskite. Similar to organic semiconductors they tunable bandgaps3,4, but reaching superior transport show. Recommended citation liu, guoduan, fabrication and characterization of planarstructure perovskite solar cells 2019. Perovskite solar cell a source of renewable green power. Furthermore, we fabricate perovskite solar cells with a novel backcontact structure, in which electron and holeselective electrodes are copositioned on the back side of the cell and spaced by 100. Based on the results a new structure was proposed for pb free perovskite solar cell back contactmasnbr3 masni3cdznsfto with pce of 18. Based on these perovskite light absorbers, power conversion efficiencies of the perovskite solar cells employing hole transporting layers have increased from 9. Perovskites for clean energy clean energy institute. Halide perovskites have demonstrated exceptional progress in pv cell performancefrom 3. Theses and dissertationselectrical and computer engineering. Though perovskite type materials are known for more than a century, the employment of novel hybrid organicinorganic perovskite materials as absorbers in photovoltaic was recently developed, firstly in.
A new era of growth in the field of perovskite solar cells began this month, with the publication of a paper by mercouri kanatzidis, charles e. Perovskite solar cells psc performance has risen rapidly the last few years with. The lone hurdle to wide spread adoption of hybrid perovskite solar cells remains thermal and water stability. Correlating structural and optoelectrical properties of. Nanoscale study of perovskite solar cells for efficient. But since holes are present in low concentration, a hole transport. Defect chemistry and proton conductivity in babased perovskites thesis by jian wu in partial fulfillment of the requirements for the degree of doctor of philosophy california institute of technology pasadena, california 2005 defended oct 27, 2004.
Tandem solar cells perovskite hypercells graduate school. Perovskite solar cells psc are a relatively new concept. Improved active layer morphology and porefilling in. Perovskite solar cells can be manufactured using simple, additive deposition techniques, like printing, for a fraction of the cost and energy. Nrels applied perovskite program seeks to make perovskite solar cells a viable technology by removing barriers to commercialization by increasing efficiency, controlling stability, and enabling scaling. Active layer control for high efficiency perovskite solar. Pscs are a promising new thinfilm technology, offering both high solar to electricity conversion efficiencies and cheap fabrication costs. Operating perovskite solar cell under concentrated solar light yen jung tu, m. Perovskite type oxides with the general formula abo 3. Life cycle assessment of perovskite solar cells and. In a matter of a few years, the power conversion efficiency pce of the psc has catapulted from 4%. Oneyear stable perovskite solar cells by 2d3d interface.
Longterm stability is an ongoing concern of perovskite solar cells. Draw my phd perovskite solar cells cameron underwood. This thesis is based on the following papers, which are referred to in the text by their roman numerals. Pscs show promise to overcome the tradeoff between high efficiency and lowcost device fabrication. Development and optimisation of efficient spraycoated. The student will work in close collaboration with members from both the asi. New photoanodes and hole transporting materials for the. However, the halide perovskite solar cells are facing several serious problems, such as request of further improvement efficiency and the lead pollution. Vikram dalal, major professor rana biswas joseph shinar sumit chaudhary. It also introduces a specific computation process for this model. It has been accepted for inclusion in theses and dissertations by an authorized administrator of open prairie. Rongsheng wei thesis pdf 3mb abstract this project focuses on simulation performance of perovskite solar cells using two models. The work documented in this thesis concerns the control and modification of semiconducting perovskite thin films for their use in perovksite solar cells pscs. Understanding the electronic and structural properties of perovskite solar cells with use of density functional theory if youd like to learn more about perovskite solar.
I believe that this thesis clearly goes beyond adapting interface materials from the organic or dye sensitized photovoltaic community but rather gives deep insight into the mechanisms being. Unusual defect physics in ch3nh3pbi3 perovskite solar cell. Hcsi and the organic pv perovskite groups to design, implement and characterize thin films with the desired properties into solar cell architectures, using state of the art deposition and. Ch3nh3pbi3 bulkheterojunction f 2019 journal of materials chemistry a hot papers. One hot research topic is that of novel solar devices such as the hybrid inorganicorganic perovskite solar cell. Materials interface engineering in perovskite photovoltaics jixian xu doctor of philosophy the edward s. Performance and stability of perovskite solar cells. Femtosecond laser spectroscopy transient absorption and fluorescence spectroscopy, interpretation of spectrotemporal data, quantitative data analysis. Dalal, major professor rana biswas jaeyoun kim mani mina farzad sabzikar.
These problems hinder the future commercialization of halide perovskite solar cells. Graduate theses and dissertations iowa state university capstones, theses and dissertations 2015 device physics of organic and perovskite solar cells mehran samiee esfahani iowa state university follow this and additional works at. Perovskite materials, such as methylammonium lead halides and allinorganic cesium lead halide, are cheap to produce and simple to manufacture. I would like to thank associate professor morten madsen for giving me an opportunity as a phd student to be part of his research group. The emergence of perovskite solar cells nature photonics. They adopt a perovskite crystal structures that contains a ybrid organich inorganic lead compound as their absorber layers. Chargecarrier recombination is one of the most important properties of a solar cell. Within the space of a few years, hybrid organicinorganic perovskite solar cells have emerged as one of the most exciting material platforms in the photovoltaic sector. Substratedependentphotoconductivitydynamicsina high. Phd position on modelling of perovskite solar cells. Pdf the efficiency of solar cells based on organicinorganic hybrid perovskite materials has a rapid growth from 3. Enhancing the efficiency and stability of perovskite solar. The objective of this thesis was to prepare, using solgel autocombustion method using tartric and citric acid as combustion agents, investigate the structural and dielectric and catalytic properties of the perovskite type oxides.
High efficiency semiconductor based solar cells thesis of. Jan 01, 2019 a new era of growth in the field of perovskite solar cells began this month, with the publication of a paper by mercouri kanatzidis, charles e. Lowcost highefficiency solar cells with wafer bonding and plasmonic technologies thesis by katsuaki tanabe in partial fulfillment of the requirements for the degree of doctor of philosophy california institute of technology pasadena, california 2008 defended may 21, 2008. Perovskite solar cells have established their place as one of the most exciting solar cell technologies currently under investigation. University of bath phd synthesis of perovskite nanocrystals and.
Engineering of materials for hole transport applications. Nanoscale study of perovskite solar cells for efficient charge transport nirmal adhikari south dakota state university. With consistent research at different labs work perovskite pv device have already achieved 15%. The main idea of this 9 thesis is to study the photophysical properties and the mechanisms affecting the 10 performance of solar cells. Optimisation of fabrication processes for stable and scalable.
In situ growth of 2d perovskite capping layer for stable. In contrast to the rapid progress in efficiency, our understanding of why hybrid perovskite solar cells perform so well is lacking. Within 5 years of development, the power conversion efficiency pce of pscs has reached 22. Pdf fabrication and characterization of perovskite solar cells. The precursor solution was made bydissolving172mg fai,507mg pbi 2,22. Fraunhofer institute for solar energy systems ise is europes largest solar applicationoriented research into technical solutions for the use of solar solar cells is looking for a student for a master. One is a simplified model developed for perovskite absorber layer of pscs by using. Molecular engineering towards high efficiency perovskite. Formamidinium fabased perovskite is a promising photovoltaic material due to its higher thermal stability and smaller bandgap.
In this thesis, optimisation of planar perovskite solar cells is carried out by the engi. The university of sheffield faculty of science sheffield physics and astronomy sheffield identification numberethosid. Development of absorbing materials for perovskite solar cells. Recently, a perovskite solar cell with leadbased absorber has received a lot of attention from solar cell producers since it offers the promise of relatively cheap and efficient solar cells news every day, 2015. The first part of this thesis illustrates a numerical model of perovskite solar cells pscs by using the matlab program. Device physics of organic and perovskite solar cells by mehran samiee esfahani a dissertation submitted to the graduate faculty in partial fulfillment of the requirements for the degree of doctor of philosophy major.
Perovskite solar cells psc is one the most recent photovoltaic approaches to transform directly sun light into electricity. Fabrication and characterization of planarstructure perovskite solar cells guoduan liu. The stability of perovskite solar cells is a vital issue that must be. However, since perovskite materials are prone to degradation, their lifetime needs to be improved to that of silicon solar cells before these devices can be commercialized. Solar cells made from hybrid perovskite semiconductors have emerged only recently, yet their efficiency is already comparable to that of silicon solar cells. Materials interface engineering in perovskite photovoltaics.
Optimisation of fabrication processes for stable and. A novel allsolidstate, hybrid solar cell based on organicinorganic metal halide perovskite ch 3 nh 3 pbx 3 materials has attracted great attention from the researchers all over the world and is considered to be one of the top 10 scientific breakthroughs in 20. Despite the impressive photovoltaic performances with power conversion efficiency beyond 22%, perovskite solar cells are poorly stable under operation, failing by far the market requirements. Life cycle assessment of perovskite solar cells and comparison to silicon solar cells masters thesis within the sustainable energy systems programme jonas stasiulionis department of energy and environment division of environmental systems analysis chalmers university of technology gothenburg, sweden 2015 report no. Another method was explored to synthesize perovskite by slight variation to already reported method by replacing methylamine in ethanol with methylamine in water. Ch3nh3pbi3 bulkheterojunction f 2019 journal of materials chemistry. Methylamine ma perovskite was synthesized by two methods as suggested in literature. Her supervision was crucial for me to plan and finish my phd, and her. The perovskite solar cells studied in this thesis use ch3nh3pbi3 or mapi. Perovskite materials offer excellent light absorption, chargecarrier mobilities, and lifetimes, resulting in high.
University of groningen device physics of hybrid perovskite solar. The opportunity to deposit these abundant materials with large area solution processing techniques could make perovskites viable for lowcost production. Metaloxide based interlayers for organic and perovskite photovoltaics mehrad ahmadpour university of southern denmark. I have arrived at developing the new high efficiency semiconductor based solar cell via high efficiency heterostructure light emitting devices. Preparation and characterization of lead halide perovskites. My thesis explored and expanded beyond the scope of the aforementioned project to research different avenues for improving the efficiency of solar photovoltaic power system from the solar cell level to the solar array mounting, array tracking and dcac inversion system techniques. Morrison professor of chemistry at northwestern university, in the proceedings of the national academy of sciences pnas. Thus, it is apparent that perovskite solar cell is a. The phd thesis will explore this perovskite silicon tandem cell concept. Phd thesis project nirabsorbing dyesensitized solar cells. Jun 27, 2014 the emergence of perovskite solar cells. Phd position on modelling of perovskite solar cells euraxess.
Defect chemistry and proton conductivity in babased perovskites. University of pittsburgh, 2016 a recent forecast suggested that solar cell industry will contribute nearly one third of new electricity generation capacity worldwide by the year 2030. Stability, design architecture, photophysical properties, and morphology of the film in organometal halide perovskite. High performance solidstate mesoscopic solar cells. Perovskites, being ambipolar in nature, can conduct both electrons and holes. Perovskite based solar cells iiser kolkata eprints.
A perovskite solar panel is a kind of solar panel with a. It receives special attention in the scientific community 8 and industry because of the lowcost, it is easy to fabricate and has high pce. Perovskite solar cells pscs are solar cells implemented with perovskite absorber. The quantum efficiency spectrum for the bonded cell was quite similar to that for each of.
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