Towards high efficiency thin film solar cells

Han, Guifang; Zhang, Sam; Boix, Pablo P.; Wong, Lydia Helena; Sun, Lidong; Lien, Shui−Yang

doi:10.1016/j.pmatsci.2017.02.003

Cited by 105 publications

(70 citation statements)

References 230 publications

(266 reference statements)

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“…Obviously, the concentration of defects can be significantly higher close to external surfaces and interfaces with other materials where the stoichiometry can be affected by chemical reactions and changes in the Fermi energy resulting from charge transfer [23][24][25] . In a standard perovskite solar cell (PVSC) the absorber (MAPbI3) is cladded with charge selective contact layers; an electron transport layer (ETL) on one side and a hole transport layer (HTL) on the other 26,27 . Figure 2(a) shows a typical PVSC configuration with TiO2 as ETL and Spiro:OMeTAD as HTL.…”

Section: Hybrid Organic-inorganic Perovskite Solar Cell Operationmentioning

confidence: 99%

Bistable Amphoteric Native Defect Model of Perovskite Photovoltaics

Walukiewicz

Rey‐Stolle

Han

et al. 2018

J. Phys. Chem. Lett.

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The past few years have witnessed unprecedented rapid improvement of the performance of a new class of photovoltaics based on halide perovskites. This progress has been achieved even though there is no generally accepted mechanism of the operation of these solar cells. Here we present a model based on bistable amphoteric native defects that accounts for all key characteristics of these photovoltaics and explains many idiosyncratic properties of halide perovskites. We show that a transformation between donor-like and acceptor-like configurations leads to a resonant interaction between amphoteric defects and free charge carriers. This interaction, combined with the charge transfer from the perovskite to the electron and hole transporting layers results in the formation of a dynamic n-i-p junction whose photovoltaic parameters are determined by the perovskite absorber. The model provides a unified explanation for the outstanding properties of the perovskite photovoltaics, including hysteresis of J-V characteristics and ultraviolet light-induced degradation.

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Section: Hybrid Organic-inorganic Perovskite Solar Cell Operationmentioning

confidence: 99%

Bistable Amphoteric Native Defect Model of Perovskite Photovoltaics

Walukiewicz

Rey‐Stolle

Han

et al. 2018

J. Phys. Chem. Lett.

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“…A review of faults in PV systems is presented in [11]. Power generation is also dependent upon the type of PV material [12]. The impact of shading on different PV technologies [13] has been largely investigated in the past [14][15][16][17][18].…”

mentioning

confidence: 99%

A Unified Approach for Analysis of Faults in Different Configurations of PV Arrays and Its Impact on Power Grid

et al. 2019

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Fault analysis in photovoltaic (PV) arrays is considered important for improving the safety and efficiency of a PV system. Faults do not only reduce efficiency but are also detrimental to the life span of a system. Output can be greatly affected by PV technology, configuration, and other operating conditions. Thus, it is important to consider the impact of different PV configurations and materials for thorough analysis of faults. This paper presents a detailed investigation of faults including non-uniform shading, open circuit and short circuit in different PV interconnections including Series-Parallel (SP), Honey-Comb (HC) and Total-cross-Tied (TCT). A special case of multiple faults in PV array under non-uniform irradiance is also investigated to analyze their combined impact on considered different PV interconnections. In order to be more comprehensive, we have considered monocrystalline and thin-film PV to analyze faults and their impact on power grids. Simulations are conducted in MATLAB/Simulink, and the obtained results in terms of power(P)-voltage(V) curve are compared and discussed. It is found that utilization of thin-film PV technology with appropriated PV interconnections can minimize the impact of faults on a power grid with improved performance of the system.Energies 2020, 13, 156 2 of 23 ground faults which led towards a large fire accident [6]. Another similar accident happened due to undetected faults in a 1 MW PV system of Mount Halley, North Carolina in 2011 [7]. Thus, timely diagnosis of faults in PV systems is very important for the prevention of such large fire accidents [8]. The modeling of a PV system under electrical faults [9] has been studied in the literature [10]. A review of faults in PV systems is presented in [11]. Power generation is also dependent upon the type of PV material [12]. The impact of shading on different PV technologies [13] has been largely investigated in the past [14][15][16][17][18]. The performance of crystalline PV material can be affected greatly by environmental conditions [14]. P-V curve analysis for studying the impact of shading on polycrystalline and thin-film PV modules was performed in [15]. Thin-film PV performed better as compared to polycrystalline PV under severe shading in terms of power output. The experimental analysis of PV material in Anatolia also proved that thin-film technology has less impact on shading and high temperature as compared to crystalline PV material [16]. Only shading and temperature conditions are analyzed for thin-film PV technology [17]. Further research is needed to investigate the impact of short circuit and open circuit faults on thin-film PV technology.Different methods of maximum power point tracking (MPPT) [18] have been investigated but improvements in the algorithm cannot compensate for significant power losses that occurr through fault occurrence in PV arrays. A reconfiguration technique was adopted in [19] to increase power generation but this technique requires a complex switching matrix with many sensors and prope...

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“…A escala de laboratorio para fabricar celdas solares se utilizan sustratos de silicio (Z. Xu, Liu, Ren, Yang, & Ma, 2016), vidrio recubiertos con un óxido conductor transparente (Han et al, 2017) o polímeros metalizados (Chopra, Paulson, & Dutta, 2004); mientras que para los electrodos de un supercapacitor se pueden It is interesting to say that these devices can, in many cases, be fabricated with similar technologies. At the laboratory scale, silicon substrates (Z.…”

Section: Motivación / Motivationunclassified

“…At the laboratory scale, silicon substrates (Z. Xu et al, 2016), glass coated with a transparent conducting oxide (Han et al, 2017) or metallized polymers (Chopra et al, 2004) are used to fabricate solar cells; while carbon cloths (J. Xu et al, 2013), fabric and conductive glass substrates (Berendjchi et al, 2016; utilizan telas de carbono (J.…”

Section: Motivación / Motivationmentioning

confidence: 99%

Diseño sostenible de materiales cerámicos multifuncionales para el suministro eléctrico de baja potencia.

Laverde¹,

María²

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Towards high efficiency thin film solar cells

Cited by 105 publications

References 230 publications

Bistable Amphoteric Native Defect Model of Perovskite Photovoltaics

Bistable Amphoteric Native Defect Model of Perovskite Photovoltaics

A Unified Approach for Analysis of Faults in Different Configurations of PV Arrays and Its Impact on Power Grid

Diseño sostenible de materiales cerámicos multifuncionales para el suministro eléctrico de baja potencia.

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