Simulation of organic solar cells’s power conversion efficiency

Rosa, Eduardo Henrique dos Santos; Kowalski, Edemir Luiz; Toledo, Luiz Felipe Ribeiro Barrozo

doi:10.1016/j.solener.2021.04.016

Cited by 22 publications

(10 citation statements)

References 24 publications

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“…The J SC increases slightly with T and varies significantly from different TCO perspectives. A few pioneering researchers revealed the same behavior [36]: the J SC increases with a greater magnitude than the previous outcomes [47] and becomes saturated as the T increases [48]. Figure 7(b) shows that the V OC decreases concurrently with increasing T. The V OC of 0.82 volts and 0.693 volts has been achieved at 300 K and 400 K temperatures, respectively.…”

Section: Effect Of Temperature In Oscmentioning

confidence: 63%

“…The major resultant PV parameters, such as J SC and PCE, for the different TCOs, as a function of ETL thicknesses are illustrated in figures 5(a) and (b). While a variable number of device resistances have been framed through various ETL thicknesses within the OSC [48]. The observations imply that the presence of thicker ETL could enhance hopping quality as well as grain boundary integration in OAL.…”

Section: Performance Of Oscs Based On Zno As Etl With Different Tcomentioning

confidence: 99%

“…Instead, designers chose the thinnest HTL possible while keeping the OAL thickness steady [41][42][43]. However, it is too hard to deposit a very thin ETL layer (10 or 15 nm), but it is practicable to achieve a thickness of 40 to 50 nm, which will work better [43][44][45][46][47][48][49][50][51][52][53][54].…”

Section: Performance Of Oscs Based On Zno As Etl With Different Tcomentioning

confidence: 99%

“…Similarly, pinhole-free and compact ETL fabrication is an essential interlayer in productive OSCs. The effect of the most commonly used ZnO as an ETL on device performance has just been validated by fabricating with different ETL thicknesses [47][48][49]. A few findings suggest that an optimal ETL thickness effectively blocks hole injection into the OAL, which is a promising strategy for improving OSC performance through longer L , n p , negligible leakage current, low charge transfer resistance, and recombination rate [50][51][52].…”

Section: Introductionmentioning

confidence: 99%

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The role of a highly optimized approach with superior transparent conductive oxide anode towards efficient organic solar cell

Gogoi

Das

2023

Phys. Scr.

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The effort emphasizes the numerical analysis of different transparent conducting oxides (TCOs) perspectives, which include ITO, FTO, AZO, and IZO anode-based organic solar cells (OSCs) with the drift-diffusion approach. The prior selection of aluminum-doped zinc oxide (AZO) as TCO is feasible for more extended transparency and antireflection due to a tailored absorption wavelength of <380 nm and the factors of higher mechanical flexibility, low-cost processing, and realistic performance at lower temperatures. To confirm the stability and reproducibility of the design OSC, the contribution of each interfacial layer thickness, i.e., AZO as TCOs, P3HT: PC61BM as an organic absorbing layer (OAL), Spiro-OMeTAD (SOT) as a hole-transport layer (HTL), and ZnO as an electron-transport layer (ETL), is also investigated. Furthermore, functions of optimum trap-state densities (Nt) and charge carrier mobility (μn,p) in OAL have been performed to aid in increasing the diffusion length of excitons carriers (L(n,p)). These properties led to better photo generation and transport of charge carriers, decreasing the series resistance (RS), leading to lower bimolecular recombination, a long carrier lifetime (ζn,p), and consequently higher power conversion efficiency (PCE). The findings revealed that the proposed OSC structure achieves an excellent PCE of 10.28% for AZO as TCO with an 850 nm ultra-thick OAL under AM 1.5G light irradiation. Hence, a better fabrication process for efficient OSC could also be improved by the optimization of all these critical factors for future research.

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Section: Effect Of Temperature In Oscmentioning

confidence: 63%

Section: Performance Of Oscs Based On Zno As Etl With Different Tcomentioning

confidence: 99%

Section: Performance Of Oscs Based On Zno As Etl With Different Tcomentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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The role of a highly optimized approach with superior transparent conductive oxide anode towards efficient organic solar cell

Gogoi

Das

2023

Phys. Scr.

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“…Organic solar cells (OSCs) have been heralded as a revolutionary technology in the renewable energy sector due to their flexible and light-weight nature and low production cost. [1][2][3][4] While power conversion efficiencies of OSC devices have been improving, 5 they have not yet reached levels high enough for OSCs to realize their promise; this is largely due to the challenge of efficiently extracting free charge carriers without detrimental losses. 6,7 All light-harvesting devices start by capturing a photon to excite a bound electron-hole pair -an exciton.…”

Section: Introductionmentioning

confidence: 99%

Exciton dissociation mediated by phonons in organic photovoltaics

Fomichev¹,

Ruocco²,

Tully³

et al. 2023

Preprint

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It is well known that phonons can overscreen the bare Coulomb electron-electron repulsion, turning it into the effective attraction that binds the Cooper pairs responsible for BCS superconductivity.Here, we use a simple lattice model to prove that the counterpart of this is also possible, whereby phonons overscreen the bare electron-hole attraction and may turn it repulsive at short distances, driving exciton dissociation in certain regions of the parameter space. We argue that this phononmediated short-range screening plays an important role in the physics of organic solar cell materials (and other materials with strong electron-phonon coupling) and could point the way to new strategies for optimizing their efficiencies.

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A Power Loss‐Based Modeling of Power Conversion Efficiency in Organic and Perovskite Solar Cells

Mehdizadeh‐Rad,

Setsoafia,

Sreedhar Ram

et al. 2024

Physica Status Solidi (a)

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This article presents a new mathematical model for simulating the power conversion efficiency (PCE) of organic solar cells (OSCs) and perovskite solar cells (PSCs). This model incorporates all power losses that can occur before the charge carriers are collected by their respective electrodes. This includes power loss due to thermalization of the charge carriers above the bandgap (), charge carrier recombination (, dissociation of excitons (, and the transport of free charge carriers to their respective electrodes through the energy off‐sets (. By quantifying each power loss, the model can simulate the net electrical power generated by a solar cell and estimate its PCE. The validity of the mathematical model is tested by comparing the calculated PCE of an OSC and a PSC with their experimental results and the results obtained from the conventional simulation, which are found to be in good agreement. It is found that the highest power loss occurs due to in both OSC and PSC. Compared to conventional models, this model establishes a direct relationship between PCE and individual power losses that may occur in both OSCs and PSCs.

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Simulation of organic solar cells’s power conversion efficiency

Cited by 22 publications

References 24 publications

The role of a highly optimized approach with superior transparent conductive oxide anode towards efficient organic solar cell

The role of a highly optimized approach with superior transparent conductive oxide anode towards efficient organic solar cell

Exciton dissociation mediated by phonons in organic photovoltaics

A Power Loss‐Based Modeling of Power Conversion Efficiency in Organic and Perovskite Solar Cells

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