The role of grain boundaries in perovskite solar cells
The photovoltaic performance of the PVSK solar cells were found to be strongly affected by the grain size of the film, which indicates the importance of GBs in …
New Energy Sources WhatsAppPhotovoltaic cell grain boundaries turn yellow
The photovoltaic performance of the PVSK solar cells were found to be strongly affected by the grain size of the film, which indicates the importance of GBs in …
Strain regulates the photovoltaic performance of thick-film …
The power conversion efficiencies of thick-film perovskite solar cells lag behind those with nanometre film thickness. Here, the authors rule out the restrictions of carrier lifetime on device ...
New Energy Sources WhatsAppGrain-Boundary-Enhanced Carrier Collection in CdTe Solar Cells
Grain-Boundary-Enhanced Carrier Collection in CdTe Solar Cells Chen Li, 1,2 Yelong Wu, 3 Jonathan Poplawsky, 4,2 Timothy J. Pennycook, 5,6 Naba Paudel, 3 Wanjian Yin, 3 Sarah J. Haigh, 7 Mark P. Oxley, 8,2 Andrew R. Lupini, 2 Mowafak Al-Jassim, 9 Stephen J. Pennycook, 4 and Yanfa Yan 3
New Energy Sources WhatsAppGrain-boundary grooves in perovskite solar cells
Such formed grain-boundary grooves (GBGs) invariably influence the heterointerface microstructures in perovskite solar cells (PSCs). Herein, we present a unique, focused discussion on this prominent yet rarely studied microstructure type.
New Energy Sources WhatsAppStable High-Performance Perovskite Solar Cells via Passivation of the Grain Boundary …
The carrier recombination at the perovskite grain boundary and layer interface is the main factor that limits the efficiency of the perovskite solar cells (PSCs). Herein, such recombination loss is significantly improved by inducing a new adduct [lead(II) iodide–tetramethylene sulfoxide (PbI2–TMSO)] into the perovskite precursor solution (this …
New Energy Sources WhatsAppImproved photovoltaic and grain boundary characteristics of …
Positively-charged grain boundaries with narrow potential peaks seem to play a critical role for effective exciton separation and higher efficiency. The improvement is also understood as related to well-defined microstructures and the variable optical band gap. 2 4
New Energy Sources WhatsAppThe Role of Grain Boundaries in CZTS‐Based Thin‐Film Solar Cells
Silicon is one of the most-studied semiconductor materials, with techniques to control and manipulate its properties well established by the integrated-circuit (IC) industry. In recent years, the photovoltaic community has seen growing interest in Cu 2 ZnSnS 4 (CZTS)-based thin-film solar cells which include Cu 2 ZnSnS 4 (CZTS), Cu 2 …
New Energy Sources WhatsAppImproved Photovoltaic Characteristics and Grain Boundary …
DOI: 10.1021/acsami.6b04407 Corpus ID: 36905499 Improved Photovoltaic Characteristics and Grain Boundary Potentials of CuIn0.7Ga0.3Se2 Thin Films Spin-Coated by Na-Dissolved Nontoxic Precursor Solution. Recently, a 22.6% efficiency CIGS solar cell ...
New Energy Sources WhatsAppAdvancement in CdMnTe-based photovoltaic cells: Grain growth, …
A total of 6 devices were produced under similar deposition conditions, and the best device was picked for investigation. The device efficiency and other performance parameters of fabricated CMT PV cells (having active area = 0.126 cm 2) were determined by taking light current–voltage measurements employing a source meter (Keithley-2400), …
New Energy Sources WhatsAppThe effects of grain boundaries on the performance of thin film photovoltaic …
The effects of grain boundaries on the performance of thin film polycrystalline solar cells are evaluated. The dependence of the minority carrier lifetime on grain diameter is investigated. These data are used, in turn, to determine the dependence of the collection ...
New Energy Sources WhatsAppDisentangling electronic transport and hysteresis at individual grain boundaries …
boundary structure, and grain size and boundary density are usually linked to photovoltaic device performance. AFM, particularly functional AFM such as Kelvin Probe Force Microscopy (KPFM)
New Energy Sources WhatsAppEnabling full-scale grain boundary mitigation in polycrystalline …
The grain aggregates, in turn, form larger agglomerates (domains) leading to domain boundaries, often and inadequately referred to as "GBs" in the research field of metal halide perovskites. As shown in Fig. 1A, these resultant boundaries can be categorized as interaggregate GBs (pointed by green arrows) and intra-aggregate GBs …
New Energy Sources WhatsAppGiant intrinsic photovoltaic effect in one-dimensional van der …
Here, the authors report the observation of a strong and gate-tunable IPVE in 1D grain boundaries of a van der Waals semiconductor, ReS2. The photovoltaic effect lies at the heart of...
New Energy Sources WhatsAppHow do solar cells work? Photovoltaic cells explained
Two main types of solar cells are used today: monocrystalline and polycrystalline.While there are other ways to make PV cells (for example, thin-film cells, organic cells, or perovskites), monocrystalline and polycrystalline solar cells (which are made from the element silicon) are by far the most common residential and commercial …
New Energy Sources WhatsAppGrain-boundary grooves in perovskite solar cells
Such formed grain-boundary grooves (GBGs) invariably influence the heterointerface microstructures in perovskite solar cells (PSCs). Herein, we present a unique, focused …
New Energy Sources WhatsAppTuning Band Alignment at Grain Boundaries for Efficiency Enhancement in Cu2ZnSnS4 Solar Cells …
(a) and (b) are the tunneling current mapping of CIGS and CZTS, respectively. GBs show up as dark boundaries in CIGS, while bright lines are found in CZTS. Tunneling I−V curves measured at ...
New Energy Sources WhatsAppNavigating grain boundaries in perovskite solar cells
Grain boundaries (GBs) play an important role in determining recombination in perovskite solar cells (PSCs). Vaynzof et al. report on this effect using …
New Energy Sources WhatsAppNanoscopic Study of the Compositions, Structures, and Electronic Properties of Grain Boundaries in Cu (InGa)Se2 Photovoltaic …
Polycrystalline Cu(InGa)Se2 (CIGS) thin film is a well-known light absorber material for photovoltaic solar cells. However, the mechanism of the benignity of its grain boundary (GB ...
New Energy Sources WhatsAppVertical grain-shape engineering for high-efficiency and stable perovskite solar cells: Cell …
Shi et al. present a vertical grain-shape engineering approach based on anilinium hypophosphite for precise control of vertical growth of perovskite grains. By controllable alteration of the vertical structures, they effectively fabricate a perovskite film without pinholes and with monolithic crystalline structures, demonstrating uniform grain sizes …
New Energy Sources WhatsAppEnhancing perovskite solar cells performance via sewing up the grain boundary …
Download: Download high-res image (154KB)Download: Download full-size imageA novel "sewing-up grain boundary" strategy is developed to effectively reduce and continuously passivate the GBs in perovskite films. Hydroxyl functionalized ionic liquids ([HOEMIM]BF 4 or [HOEMIM]Cl) permeate into the GBs and continuously sew up the …
New Energy Sources WhatsAppTuning Band Alignment at Grain Boundaries for Efficiency Enhancement in Cu2ZnSnS4 Solar Cells …
(a) Schematic diagram of the experimental setup for CP-AFM used to study the CIGS and CZTS absorber thin films; (b) schematic band diagram to illustrate the Schottky barrier and built-in electric ...
New Energy Sources WhatsAppRecombination in Perovskite Solar Cells: Significance …
Neutral grain boundaries in the Cu(In,Ga)Se2 layer are predicted to be most detrimental if they are parallel to the main junction …
New Energy Sources WhatsAppGrain-Boundary-Enhanced Carrier Collection in CdTe Solar Cells
When CdTe solar cells are doped with Cl, the grain boundaries no longer act as recombination centers but actively contribute to carrier collection efficiency. The physical origin of ...
New Energy Sources WhatsAppGrain boundaries in CdTe thin film solar cells: a review
Grain boundaries in CdTe thin film solar cells: a review, Jonathan D Major CdTe thin film solar cells have enjoyed a remarkable renaissance in recent years. For over a decade the peak efficiency of CdTe had stalled at 16.5% [] but recent device development, primarily by First Solar, has seen efficiencies surpass that of multicrystaline …
New Energy Sources WhatsAppThe role of grain boundaries in perovskite solar cells
With a certified power conversion efficiency (PCE) exceeding 22%, the hunt is now on clues to further improve the PCE and stability of perovskite (PVSK) solar cells toward commercialization. Polycrystalline PVSK films are grown by low temperature solution processes that results in the formation of sub-micron scale grains and consequent grain …
New Energy Sources WhatsAppDefect segregation at grain boundary and its impact on photovoltaic …
Defect segregations at grain boundaries (GBs) of polycrystalline thin-film absorber are crucial to solar cell performance. The Σ3(114) GBs in CuInSe2 (CIS) have been studied ...
New Energy Sources WhatsAppDependence of the Heterogeneity of Grain Boundaries on …
In polycrystalline perovskites, grain boundaries (GBs) that isolate grains determine the optoelectronic properties of a semiconductor, and hence affect the …
New Energy Sources WhatsAppRecombination in Perovskite Solar Cells: Significance of Grain Boundaries…
Trap-assisted recombination, despite being lower as compared with traditional inorganic solar cells, is still the dominant recombination mechanism in perovskite solar cells (PSCs) and limits their efficiency. We investigate the attributes of the primary trap-assisted recombination channels (grain boundaries and interfaces) and their …
New Energy Sources WhatsAppThe Role of Grain Boundaries in Organic–Inorganic Hybrid …
Grain boundaries (GBs) in perovskite polycrystalline films are the most sensitive place for the formation of the defect states and the accumulation of impurities. Thus, abundant …
New Energy Sources WhatsAppBand bending near grain boundaries of Cu2ZnSn(S,Se)4 thin films and its effect on photovoltaic performance …
Although the family of polycrystalline Cu2ZnSn(S,Se)4 (CZTSSe) thin films are well-known light absorber materials for photovoltaic solar cells and have been studied extensively in ...
New Energy Sources WhatsAppThe role of grain boundaries in perovskite solar cells
The photovoltaic performance of the PVSK solar cells were found to be strongly affected by the grain size of the film, which indicates the importance of GBs in PVSK solar cells. Furthermore, in the two-step method, the film quality including morphology and optoelectrical properties is strongly affected by the quality of the PbI 2 …
New Energy Sources WhatsAppGrain boundaries in CdTe thin film solar cells: a review
The current state of knowledge on the impact of grain boundaries in CdTe solar cells is reviewed with emphasis being placed on working cell structures. The role of the chemical composition of grain boundaries as well as growth processes are discussed, along with characterisation techniques such as electron beam induced current and …
New Energy Sources WhatsAppPolarized light emission from grain boundaries in photovoltaic silicon
Grain size is regarded as an important factor, since smaller grain size introduces more grain boundaries, which are potentially deleterious features [5], [6]. However, the presence of defect structures or grain boundaries alone does not directly correlate to reduced solar cell performance.
New Energy Sources WhatsAppPhysical Passivation of Grain Boundaries and Defects in …
Herein, we develop a universal strategy combining interface (PMMA:C60) and grain boundary (PTABr) engineering to effectively eliminate the hysteresis of planar …
New Energy Sources WhatsAppEnabling full-scale grain boundary mitigation in polycrystalline …
Abstract. There exists a considerable density of interaggregate grain boundaries (GBs) and intra-aggregate GBs in polycrystalline perovskites. Mitigation of …
New Energy Sources WhatsAppTo Reveal Grain Boundary Induced Thermal Instability of Perovskite Semiconductor Thin Films for Photovoltaic …
The grain size is well controlled by employing isopropanol solvent annealing on CH 3 NH 3 PbI 3 films, and the highest efficiency of perovskite solar cells increases from 16.87% to 18.56% with the increase in the grain size.
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