A Gaussian model for recombination via carrier-trap distributions in organic solar cells

Hernández-García, Liliana Fernanda; Ramírez, Omar; Cabrera-Arenas, V.; Resendiz-Mendoza, L.M.

doi:10.1007/s10825-016-0835-0

Cited by 3 publications

(2 citation statements)

References 23 publications

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“…In the case of trap‐assisted recombination, the impurity creates a distribution of localized energy levels in the bandgap at which one charge carrier gets trapped and then recombines with the respective free charge carrier of the opposite sign. [ 35,38–41 ] According to the Shockley‐Read‐Hall statistics, trap‐assisted recombination losses are most detrimental for the device performance in the case of deep traps that are located near the midgap of the semiconductor, facilitating efficient recombination through the trap‐states. [ 40,41 ]…”

Section: Introductionmentioning

confidence: 99%

Effect of Palladium‐Tetrakis(Triphenylphosphine) Catalyst Traces on Charge Recombination and Extraction in Non‐Fullerene‐based Organic Solar Cells

Schopp

Брус

Lee

et al. 2021

Adv Funct Materials

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The effect of the cross‐coupling catalyst tetrakis(triphenylphosphine)palladium(0) (Pd(PPh3)4) on the performance of a model organic bulk‐heterojunction solar cell composed of a blend of poly([2,6′‐4,8‐di(5‐ethylhexylthienyl)benzo[1,2‐b;3,3‐b]dithiophene]{3‐fluoro‐2[(2‐ethylhexyl)carbonyl]thieno[3,4‐b]thiophenediyl}) (PTB7‐Th) donor and 3,9‐bis(2‐methylene‐((3‐(1,1‐dicyanomethylene)‐6,7‐difluoro)‐indanone))‐5,5,11,11‐tetrakis(4‐hexylphenyl)‐dithieno[2,3‐d:2′,3′‐d′]‐s‐indaceno[1,2‐b:5,6‐b′]dithiophene (IOTIC‐4F) non‐fullerene acceptor is investigated. The effect of intentional addition of different amounts of Pd(PPh3)4 on morphology, free charge carrier generation, non‐geminate bulk trap‐ and surface trap‐assisted recombination as well as bimolecular recombination and charge extraction is quantified. This work shows that free charge carrier generation is affected significantly, while the impact of Pd(PPh3)4 on non‐geminate recombination processes is limited because the catalyst does not facilitate efficient trap‐assisted recombination. The studied system shows substantial robustness towards the addition of Pd(PPh3)4 in small amounts.

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Section: Introductionmentioning

confidence: 99%

Effect of Palladium‐Tetrakis(Triphenylphosphine) Catalyst Traces on Charge Recombination and Extraction in Non‐Fullerene‐based Organic Solar Cells

Schopp

Брус

Lee

et al. 2021

Adv Funct Materials

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“…These models play a fundamental role in predicting solar cell performance and in the optimization of their design to enhance efficiency. In the context of solar cells, numerical simulation and electrical models are thus indispensable resources for exploring new materials and technologies [18][19][20][21].…”

Section: Introductionmentioning

confidence: 99%

Simulation of the degradation behavior of small-molecule solar cells based on p-DTS(FBTTh₂)₂ as the donor material

Lastra,

Reséndiz,

Ramírez-Como

et al. 2024

Mater. Res. Express

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The use of organic solar cells (OSCs), particularly those based on small-molecule materials, has gained recognition as being promising in photovoltaic applications. However, despite notable advances, persistent challenges in relation to the long-term stability and energy-conversion efficiency of these materials continue to pose significant obstacles to their widespread adoption. The aim of this study was to enhance the efficiency and durability of such cells under ambient conditions. To elucidate whether cells with small-molecule donor materials provide higher benefits and opportunities than cells with polymer donor materials, this study compares the electrical parameters of cells with both types of donor materials. OSCs based on 7,7′-(4,4-bis(2-ethylhexyl)-4H-silolo[3,2-b:4,5-b′]dithiophene-2,6-diyl)bis(6-fluoro-4-(5′-hexyl-[2,2′-bithiophene]-5-yl)benzo[c][1,2,5]thiadiazole): [6,6]-Phenyl C71 butyric acid methyl ester (p-DTS(FBTTh2)2:PC70BM) and Poly [[4,8-bis[(2-ethylhexyl)oxy]benzo[1,2-b:4,5-b']dithiophene-2,6-diyl][3-fluoro-2-[(2-ethylhexyl)carbonyl]thieno[3,4-b]thiophenediyl]]: [6,6]-Phenyl C71 butyric acid methyl ester (PTB7:PC70BM) were manufactured and their electrical characteristics under ambient conditions determined after various time intervals. Numerical simulations based on the metal–insulator–metal (MIM) model were then performed to optimize the performance of the cells and to analyze their internal electrical dynamics in detail. The findings of this study reveal a direct relationship between solar cell degradation and the anode interface, thus enhancing understanding of the degradation mechanisms that occur in OSCs.

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Optimization of tail state Urbach energy enables efficient organic solar cells and perovskite/organic tandem solar cells

Tian

Huang

Han

et al. 2023

Organic Electronics

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A Gaussian model for recombination via carrier-trap distributions in organic solar cells

Cited by 3 publications

References 23 publications

Effect of Palladium‐Tetrakis(Triphenylphosphine) Catalyst Traces on Charge Recombination and Extraction in Non‐Fullerene‐based Organic Solar Cells

Effect of Palladium‐Tetrakis(Triphenylphosphine) Catalyst Traces on Charge Recombination and Extraction in Non‐Fullerene‐based Organic Solar Cells

Simulation of the degradation behavior of small-molecule solar cells based on p-DTS(FBTTh₂)₂ as the donor material

Optimization of tail state Urbach energy enables efficient organic solar cells and perovskite/organic tandem solar cells

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A Gaussian model for recombination via carrier-trap distributions in organic solar cells

Cited by 3 publications

References 23 publications

Effect of Palladium‐Tetrakis(Triphenylphosphine) Catalyst Traces on Charge Recombination and Extraction in Non‐Fullerene‐based Organic Solar Cells

Effect of Palladium‐Tetrakis(Triphenylphosphine) Catalyst Traces on Charge Recombination and Extraction in Non‐Fullerene‐based Organic Solar Cells

Simulation of the degradation behavior of small-molecule solar cells based on p-DTS(FBTTh2)2 as the donor material

Optimization of tail state Urbach energy enables efficient organic solar cells and perovskite/organic tandem solar cells

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Simulation of the degradation behavior of small-molecule solar cells based on p-DTS(FBTTh₂)₂ as the donor material