Analytic $JV$ -Characteristics of Ideal Intermediate Band Solar Cells and Solar Cells With Up and Downconverters

Strandberg, Rune

doi:10.1109/ted.2017.2686359

Cited by 21 publications

(7 citation statements)

References 14 publications

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“…There have been a number of device models developed specifically for IB materials, mostly for solar cells, all in steady state. These include traditional [6,[28][29][30]and Boltzmann-approximation [31,32] detailed balance models, semianalytic models in the drift [33] and diffusion [24,34,35] limits, and PDD models [25][26][27]36]. The semianalytic models are specific to either the drift or diffusive limits, while the PDD models allow treatment of IB regions that are neither fully depleted nor fully quasi-neutral.…”

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confidence: 99%

Simudo: a device model for intermediate band materials

2019

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We describe Simudo, a free Poisson/drift-diffusion steady state device model for semiconductor and intermediate band materials, including self-consistent optical absorption and generation. Simudo is the first freely available device model that can treat intermediate band materials. Simudo uses the finite element method (FEM) to solve the coupled nonlinear partial differential equations in two dimensions, which is different from the standard choice of the finite volume method in essentially all commercial semiconductor device models. We present the continuous equations that Simudo solves, show the FEM formulations we have developed, and demonstrate how they allow robust convergence with double-precision floating point arithmetic. With a benchmark semiconductor pn-junction device, we show that Simudo has a higher rate of convergence than Synopsys Sentaurus, converging to high accuracy with a considerably smaller mesh. Simudo includes many semiconductor phenomena and parameters and is designed for extensibility by the user to include many physical processes.

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confidence: 99%

Simudo: a device model for intermediate band materials

2019

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“…This model has been used and validated in many papers and gives the correct electrical characteristic relationship. [48][49][50][51] The open circuit voltage (V oc ) calculated from J by the Shockley diode equation is…”

Section: Resultsmentioning

confidence: 99%

Enabling Perovskite Solar Cell Omnidirectional Light Utilizing Via Trapping Technology

Wang

Attique

2023

Advcd Theory and Sims

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Promising optoelectronic properties of perovskites make it a research hotspot for the scientific community. Previously many groups are working on optical optimization, interface modification, material screening, and energy level matching of perovskite solar cells (PSCs). Herein, PSCs compatible with nano‐structure and photonic crystal (NSPC) are designed theoretically by using the numerical simulation technology that gives better light trapping capability to the PSC devices. The physical model is composed of perovskite spheres based on TiO2 and PDMS with the nanostructure. The size parameters of the photovoltaic devices are optimized and the wide‐angle absorption characteristics of PSCs with NSPC structure are investigated. Simulation results verify the superior optical performance of the new PSCs with a maximum photocurrent of 25.77 mA cm−2, which is 2.17 mA cm−2 higher than that of the conventional flat structured PSCs (23.60 mA cm−2). The results of the wide‐angle study demonstrate that the novel PSCs have omnidirectional absorption of photons. To elucidate the light‐trapping mechanism of the novel PSCs, the electric and magnetic field distributions of different structural PSCs are analyzed. The physical model the authors establish provides a solid theoretical basis for the research and development of PSCs with ultra‐low surface reflection loss and ultra‐high performance.

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“…Next, we used the Shockley diode model to study overall performance of realistic perovskite/c‐Si solar cell. This model has been used and verified in many papers and can give correct relationships of electrical characteristics. The open‐circuit voltage ( V oc ) calculated from the J sc by the Shockley diode equation is given as

V_{oc} = \frac{k_{b} T}{q} ln ((), \frac{J_{sc}}{J_{0}} + 1),

where k b is the Boltzman constant and T is the room temperature (298 K).…”

Section: Methods and Validationmentioning

confidence: 99%

“…where, as illustrated in Figure 1C, R ext is the normalized reflectance at the initial interface, T θ is the transmittance of an incident light at angle Next, we used the Shockley diode model to study overall performance of realistic perovskite/c-Si solar cell. This model has been used and verified in many papers [35][36][37][38]…”

Section: Introductionmentioning

confidence: 99%

Perovskite/c‐Si tandem solar cells with realistic inverted architecture: Achieving high efficiency by optical optimization

Liu

Shen

2018

Progress in Photovoltaics

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Many theoretical analyses for perovskite/c‐Si monolithic tandem solar cells (TSCs) have shown optical optimization and high efficiency limits, but they use many idealized assumptions and draw some unpractical conclusions for experiments. In this work, we have introduced a composite method combining the finite difference time domain and light path analysis for the first time. By using this method, we have systematically calculated perovskite/c‐Si monolithic TSCs with inverted architecture based on realistic solar cell parameters. Theoretical results have demonstrated very good match of the experimental external quantum efficiencies of both subcells. More importantly, from optical and electrical point of view, we have analyzed current losses of such TSCs and proposed detailed optimization for achieving high efficiency. Finally, we have presented improved configuration of perovskite/c‐Si monolithic TSCs with addition of pyramids structure in front surface, which can effectively increase the tandem cell efficiency to 29.05%. This work can be served as a practical guidance for the realization of high‐efficient perovskite/c‐Si monolithic TSCs.

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Analytic $JV$ -Characteristics of Ideal Intermediate Band Solar Cells and Solar Cells With Up and Downconverters

Cited by 21 publications

References 14 publications

Simudo: a device model for intermediate band materials

Simudo: a device model for intermediate band materials

Enabling Perovskite Solar Cell Omnidirectional Light Utilizing Via Trapping Technology

Perovskite/c‐Si tandem solar cells with realistic inverted architecture: Achieving high efficiency by optical optimization

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