Enhanced conversion efficiency in nanocrystalline solar cells using optically functional patterns

Kim, Yang Doo; Park, Sang Jun; Jang, Eunseok; Oh, Kwang Wuk; Cho, Jun Sik; Lee, Heon

doi:10.1016/j.tsf.2015.02.026

Cited by 3 publications

(2 citation statements)

References 22 publications

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“…For an absorbing layer with a thickness of about 300–800 nm (the wavelength of the visible spectrum), the spatial distribution of the optical electric field is determined by the interference between the transmitted and reflected waves at internal interfaces, which affects charge generation within the absorbing layer. [ 15 ] To ensure the MC resonance and trap more incident photons, general MC structures are constructed by adding the ultrathin but highly reflective metal layer. The metal layers exhibit strong absorption and reflection in visible spectroscopy.…”

Section: Theoretical Basis and Methods Of Simulationmentioning

confidence: 99%

Constructing Microcavity for Perovskite Laser Power Converter: A Theoretical Study

Ding

Zheng

et al. 2022

Physica Status Solidi (a)

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Laser power converters (LPCs) used in wireless energy transmission can realize noncontact power supply under extreme conditions and provide continuous energy support to unmanned probes, which is believed to play an essential role in the exploration of deep ocean. However, commercially available LPCs usually employ III–V semiconductors as light absorbers due to their industrial maturity. In order to match the underwater 450∼540 nm laser source, it requires an epitaxial growth method to tune the bandgap of those materials, which is highly costly that severely restricts the industrial preparation of LPCs on a large scale. Herein, the potential of perovskite in the application of underwater LPCs is presented theoretically by constructing MAPbBr3 LPC and its theoretical power conversion efficiency (PCE) of 48.55% is demonstrated. Moreover, a microcavity (MC) constructing strategy to further improve the device performance is proposed, in which the transfer matrix method and an admittance‐based antireflection condition approach are combined for the optical simulation. By modulating the MC condition, the significant optical resonance inside the device while avoiding the obvious light reflection is realized. As a result, MC LPCs can obtain a simulated PCE of 64.27%, which is highly competitive with the existing UV–vis LPCs.

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Section: Theoretical Basis and Methods Of Simulationmentioning

confidence: 99%

Constructing Microcavity for Perovskite Laser Power Converter: A Theoretical Study

Ding

Zheng

et al. 2022

Physica Status Solidi (a)

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“…Optical microcavity configuration in solar cells is an optical strategy to enhance light trapping in the devices arising from planar electrodes [17]. As is well known, when the thickness of an active layer approaches the wavelength of the visible spectrum in a thin film solar cell, the spatial distribution of the optical electric field within it is determined by the interference of light between the transmitted and reflected waves at each internal interface [18], which in turn affects charge generation within the active layer [19]. To obtain the optical enhancement, solar cells should possess the planar electrodes so that it can reflect the incident light and induce microcavity resonance inside the device as shown in Figure 1.…”

Section: Introductionmentioning

confidence: 99%

Transparent Ultrathin Metal Electrode with Microcavity Configuration for Highly Efficient TCO-Free Perovskite Solar Cells

You

et al. 2020

Materials

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Optical microcavity configuration is one optical strategy to enhance light trapping in devices using planar electrodes. In this work, the potential application of optical microcavity configuration with ultrathin metal electrodes in highly efficient perovskite solar cells (PSCs) was investigated. By comparing with the device with conventional indium-tin-oxide (ITO) electrodes, it is shown that by carefully designing the Ag/dielectric planar electrode, a device with an optical microcavity structure can achieve comparable—or even higher—power conversion efficiency than a conventional device. Moreover, there is a relative high tolerance for the Ag film thickness in the optical microcavity structure. When the thickness of the Ag film is increased from 8 to 12 nm, the device still can attain the performance level of a conventional device. This gives a process tolerance to fabricate devices with an optical microcavity structure and reduces process difficulty. This work indicates the great application potential of optical microcavities with ultrathin metal electrodes in PSCs; more research attention should be paid in this field.

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Hexagonal array micro-convex patterned substrate for improving diffused transmittance in perovskite solar cells

Byun

Kim

et al. 2018

Thin Solid Films

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Enhanced conversion efficiency in nanocrystalline solar cells using optically functional patterns

Cited by 3 publications

References 22 publications

Constructing Microcavity for Perovskite Laser Power Converter: A Theoretical Study

Constructing Microcavity for Perovskite Laser Power Converter: A Theoretical Study

Transparent Ultrathin Metal Electrode with Microcavity Configuration for Highly Efficient TCO-Free Perovskite Solar Cells

Hexagonal array micro-convex patterned substrate for improving diffused transmittance in perovskite solar cells

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