Internal quantum effects in solar cells
Metal halide perovskites are a promising candidate for next-generation solar cells. In order to approach the theoretical efficiency limit, it is of paramount …
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Revealing the internal luminescence quantum efficiency of …
Metal halide perovskites are a promising candidate for next-generation solar cells. In order to approach the theoretical efficiency limit, it is of paramount …
Carrier multiplication in perovskite solar cells with internal …
Here, the authors demonstrate such effects with a low threshold of 2Eg and a high efficiency of 99.4%, realizing unbiased internal quantum efficiency up to 160%.
Achieving high quantum efficiency with short carrier lifetime
In a recent publication in Angewandte Chemie, Li, Domen, and colleagues elucidate the mechanisms underlying high quantum efficiency by examining the SrTiO3:Al photocatalyst carrier dynamics through a photoluminescence study. They established efficient photocatalyst design principles applicable to water splitting, dye-sensitized solar …
Static Organic p‐n Junctions in Photoelectrodes for Solar …
1 · Time-resolved spectroscopic studies reveal that the large IQE originates from the combined high efficiencies for photoelectron generation, catalyst activation and dark …
Boosting internal quantum efficiency via ultrafast triplet ...
Recently, a rear-contact silicon solar cell covered with tetracene was designed to achieve an efficiency ~1.4 times higher than that of state-of-the-art devices owing to SEF . This SEF effect, which yields a boosted solar energy conversion in photovoltaics, prompts us to explore the carrier amplification in vdW TMD-based solar cells.
Porous silicon in crystalline silicon solar cells: a review and the ...
Porous silicon in crystalline silicon solar cells: a review and the effect on the internal quantum efficiency. L. Stalmans, Corresponding Author. L. Stalmans. ... Our analysis of internal quantum efficiency data obtained on both conventional and thin-film c-Si solar cells has been performed with the aim of describing the light diffusing ...
Photovoltaic solar cell technologies: analysing the state of the art ...
η int is the internal luminescence ... sulfide kesterite Cu 2 Zn x Cd 1−x SnS 4 solar cell: effects of cadmium ... limit with band tailing exceeds 30% for quantum dot solar cells.
External quantum efficiency measurement of solar …
External quantum efficiency (EQE) denotes the ratio of the number of charge carriers gathered by solar cells to the number of incident photons, whereas internal quantum efficiency (IQE) basically ...
Flexible and efficient perovskite quantum dot solar cells via …
The champion CsPbI3 quantum dot solar cell has an efficiency of 15.1% (stabilized power output of 14.61%), which is among the highest report to date. ... performance and understand the internal ...
Insights into Charge Dynamics and Recombination Processes in …
1 · Third component effects in BHJ solar cells: PL lifetimes are shorter, charge/energy extraction lifetimes are reduced, bimolecular and monomolecular recombination are also …
Thickness-dependent internal quantum efficiency of narrow …
1. Introduction. Recently, a polymer-based bulk-heterojunction (BHJ) solar cell exceeded 9% power conversion efficiency (PCE) [1].However, this achievement already seems like "old news" due to the success of perovskite solar cells and their impressive PCE values compared with other novel solar cell designs [2].Nevertheless, polymer-based …
Quantum efficiencies exceeding unity due to impact ionization in ...
Absolute measurements demonstrate internal quantum efficiencies in silicon solar cells to exceed unity for photon energies above the first direct band gap and to show distinct spectral features that correspond to specific points in the Brillouin zone. Ultraviolet radiation can generate hot carriers with sufficient energy to cause impact ionization which results …
Modeling the Effects of Emitter Doping Non-uniformity on the Internal …
In this paper an analytical model of the internal quantum efficiency of a CIGS solar cell is developed to show the effects of field dependent carrier mobility and doping dependent SRH ...
Quantum-assisted photoelectric gain effects in perovskite solar cells
A sunlight management strategy in perovskite solar cells (PSCs) using silicon quantum dots (SiQDs) is proposed. Due to the reabsorption of visible light induced by SiQDs, the external quantum ...
Internal quantum efficiency for solar cells
Semantic Scholar extracted view of "Internal quantum efficiency for solar cells" by Weiguang Yang et al. ... The present paper reports on a simulation study carried out to determine and optimize the effect of porous silicon (PS) layer at the rear side on the performance of thin polysilicon solar cells. It … Expand.
Luminescence coupling effects on multijunction solar cell external ...
The effects of luminescence coupling on the external quantum efficiency (EQE) measurement of an InGaP/InGaAs/Ge triple junction solar cell were investigated. A small signal model was used to study the interaction of the subcells during EQE measurement. It was found that an optical–electrical feedback mechanism results in EQE …
New Random Copolymer Acceptors Enable Additive-Free …
Blends of BSS10 with donor polymer PBDB-T combined 10.1% power conversion efficiency with 97% internal quantum efficiency and 0.59 eV optical band gap energy loss (E loss). ... Small Band gap Boron Dipyrromethene-Based Conjugated Polymers for All-Polymer Solar Cells: The Effect of Methyl Units. Macromolecules 2019, 52 (21), ...
High internal quantum efficiency in fullerene solar cells based on ...
We reached very high internal quantum efficiencies of up to 0.9 electron per photon at zero bias, over an unprecedentedly wide composition space.
Solar-cell efficiency
The internal quantum efficiency (IQE) gives insight into the internal material parameters like the absorption coefficient or internal luminescence quantum efficiency. [17] ... The inclusion of light-scattering effects in solar cells is a photonic strategy to increase the absorption for the lower-energy sunlight photons (chiefly in near-infrared ...
Spectral dependence of the internal quantum efficiency of organic solar …
As such, the internal quantum efficiency (IQE) of the solar cell may likewise depend on the excitation wavelength. We show that several model high-efficiency organic solar cell blends, notably PCDTBT:PC70BM and PCPDTBT:PC60/70BM, exhibit flat IQEs across the visible spectrum, suggesting that charge generation is occurring …
Rapid Optimization of External Quantum Efficiency of Thin Film Solar …
The performance of a solar cell is often quantified by internal (IQE) and external (EQE) quantum efficiencies. IQE is the ratio of electrons collected as photocurrent to the number of absorbed ...
Peak External Photocurrent Quantum Efficiency
Two recent reports have shown progress toward these goals. Sambur et al. reported an internal quantum efficiency (IQE) greater than 100% in a photoelectrochemical cell consisting of a monolayer of …
External quantum efficiency measurement of solar cell
External quantum efficiency (EQE) denotes the ratio of the number of charge carriers gathered by solar cells to the number of incident photons, whereas internal quantum efficiency (IQE) basically ...
Internal quantum efficiency of Si-drift solar cells with nonuniformly ...
The developed model shows that the drift-field solar cells have significantly higher internal quantum efficiency over the uniformly-doped Si-solar cells, particularly for high energy …
Enhanced Internal Quantum Efficiency in Dye …
Effective charge separation is one of the key determinants for the photovoltaic performance of the dye-sensitized solar cells (DSSCs). Herein, two charge-separated (CS) sensitizers, MTPA-Pyc and YD-Pyc, have …
Peak External Photocurrent Quantum Efficiency Exceeding 100
It is demonstrated that MEG charge carriers can be collected in suitably designed QD solar cells, providing ample incentive to better understand MEG within isolated and coupled QDs as a research path to enhancing the efficiency of solar light harvesting technologies. An experimental solar cell productively uses an extra fraction of …
Investigation on the Angle and Spectral Dependence of the Internal …
To improve energy yield predictions and to fully understand the physical behavior of solar cells, it is necessary to investigate the effects caused by a change in the angle of incidence. All relevant angle-dependent effects are presented in this paper and angular correction factors are introduced. A new analytical model is presented, which includes internal …
Quantum Efficiency of Organic Solar Cells: Electro-Optical Cavity ...
Organic solar cells (OSCs) are composed of one or more layers of order 100 nm thickness sandwiched between metallic and transparent electrodes. As such, they are low finesse, multilayer optical cavities where the optical field distribution is governed by the complex refractive indices and thicknesses of all layers in the "solar cell stack". …
Carrier multiplication in perovskite solar cells with internal quantum ...
Carrier multiplication (CM) holds great promise to break the Shockley-Queisser limit of single junction photovoltaic cells. Despite compelling spectroscopic evidence of strong CM effects in halide perovskites, studies in actual perovskite solar cells (PSCs) are lacking. Herein, we reconcile this kno …
Revealing the Impact of Aging on Perovskite Solar Cells Employing ...
3 · The enhancement of the photovoltaic performance upon the aging process at particular environment is often observed in perovskite solar cells (PSCs), particularly for …
Angle dependence of external and internal quantum efficiencies …
The realization of highly efficient organic solar cells requires the understanding and the optimization of the light path in the photoactive layer. We present in this article our approach to measure and model the optical properties of our bulk-heterojunction devices, and to control them in order to enhance the photovoltaic …
Analysis of external quantum efficiency and conversion efficiency …
The present study aims to develop a simple analytical model that simulates the effect of the front surface texturization on thin crystalline silicon solar cells performance. It provides an analytical solution to the complete set of equations needed to determine the effect of the texturization on the performance of an $$hbox {n}^{++}/ hbox …
Spectral response and quantum efficiency evaluation of solar cells…
Besides its manufacturing and installation cost [5], there are various factors such as shading, availability of sunlight, heat, humidity [6], and others that affect its efficiency, but the main focus in this chapter will be on its spectral response (SR) and quantum efficiency (QE).SR is a cornerstone that affects the performance of solar cells …
Quantum barriers engineering toward radiative and stable …
a Angular distributions of internal light emission in conventional PPV (with a 600-nm-thick perovskite and an effective scattering coefficient of 5.6 × 10 3 cm-1) and PeLED (with a 30 nm-thick ...
Angle dependence of external and internal quantum efficiencies …
The realization of highly efficient organic solar cells requires the understanding and the optimization of the light path in the photoactive layer. ... and our results on the determination of internal quantum efficiency based on EQE measurement and optical modeling cross-checked by reflection measurements. ... Heterostructures, …
A brief review of perovskite quantum dot solar …
2 · Perovskite quantum dot solar cells (PQDSCs), as the promising candidate for the next generation of solar cell, have garnered the significant attention over the past decades. However, the performance and stability …
Multiple exciton generation in quantum dot-based solar cells
Multiple exciton generation (MEG) in quantum-confined semiconductors is the process by which multiple bound charge-carrier pairs are generated after absorption of a single high-energy photon. Such charge-carrier multiplication effects have been highlighted as particularly beneficial for solar cells where they have the potential to increase the …
Internal quantum efficiency of Si-drift solar cells with …
This work focuses to develop an analytical model of the internal quantum efficiency for a drift-field Si-solar cell with non-uniformly and heavily doped emitter region. The resulting mathematical intractability owing to the consideration of all the non-ideal effects have been resolved by employing an elegant approximation technique. The developed model shows …
Effect of field dependent mobility and simultaneous …
In this paper an analytical model of internal quantum efficiency of a silicon solar cell has been developed to show the effects of field dependency of the carrier mobility and the simultaneous ...
Revealing the internal luminescence quantum efficiency of perovskite ...
Metal halide perovskites are a promising candidate for next-generation solar cells. In order to approach the theoretical efficiency limit, it is of paramount importance to maximize the internal luminescence quantum efficiency (Q i lum), which is a measure for the optoelectronic quality of semiconductors.This work introduces a novel curve-fitting …