Characterization of MOCVD Thin-Film CdTe Photovoltaics on Space-Qualified Cover Glass

Lamb, David; Irvine, S.J.C.; Clayton, Andrew; Kartopu, Giray; Barrioz, Vincent; Hodgson, Simon D.; Baker, Mark; Grilli, Rossana; Hall, James T.; Underwood, Craig; Kimber, R.M.

doi:10.1109/jphotov.2016.2520199

Cited by 11 publications

(6 citation statements)

References 20 publications

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“…From the EQE spectrum, the Jsc of the cell under AM1.5G and AM0 illumination was calculated by integrating the area under the curve. Our solar simulator was then fitted with an AM0 filter and the lamp intensity was calibrated with the EQE-calculated AM0 Jsc (as described in [18]). The AM1.5G and AM0 current-voltage curves measured at room temperature are shown in figure 1(b).…”

Section: Performance Of Perovskite Solar Cells Under Am15g and Am0 Imentioning

confidence: 99%

In situ investigation of perovskite solar cells’ efficiency and stability in a mimic stratospheric environment for high-altitude pseudo-satellites

et al. 2020

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Section: Performance Of Perovskite Solar Cells Under Am15g and Am0 Imentioning

confidence: 99%

In situ investigation of perovskite solar cells’ efficiency and stability in a mimic stratospheric environment for high-altitude pseudo-satellites

et al. 2020

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“…These high-energy particles are known to cause damages in semiconductors through ionization and displacement. [8] For example, although GaAs solar cells are the most prominent solar technology used in space due to their high efficiency, they are particularly sensitive to radiation and can undergo >80% decrease in output power after irradiation with 150 keV protons at 10 12 particles cm À2 fluence [9] or with 1 MeV protons at 10 13 particles cm À2 fluence. [10] The radiation hardness of perovskite solar cells has been little investigated and is the subject of a few publications only.…”

Section: Introductionmentioning

confidence: 99%

“…However, outer space is flooded with radiations such as electrons, protons, neutrons, X‐rays, or gamma rays, which can have dramatic consequences on microelectronic components. These high‐energy particles are known to cause damages in semiconductors through ionization and displacement . For example, although GaAs solar cells are the most prominent solar technology used in space due to their high efficiency, they are particularly sensitive to radiation and can undergo >80% decrease in output power after irradiation with 150 keV protons at 10 12 particles cm −2 fluence or with 1 MeV protons at 10 13 particles cm −2 fluence .…”

Section: Introductionmentioning

confidence: 99%

Radiation Hardness of Perovskite Solar Cells Based on Aluminum‐Doped Zinc Oxide Electrode Under Proton Irradiation

et al. 2019

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Perovskite solar cells (PSCs) have gained increasing interest for space applications. However, before they can be deployed into space, their resistance to ionizing radiations, such as high-energy protons, must be demonstrated. Herein, the effect of 150 keV protons on the performance of PSCs based on aluminumdoped zinc oxide (AZO) transparent conducting oxide (TCO) is investigated. A record power conversion efficiency of 15% and 13.6% is obtained for cells based on AZO under AM1.5G and AM0 illumination, respectively. It is demonstrated that PSCs can withstand proton irradiation up to 10 13 protons cm À2 without significant loss in efficiency. From 10 14 protons cm À2 , a decrease in short-circuit current of PSCs is observed, which is consistent with interfacial degradation due to deterioration of the Spiro-OMeTAD holes transport layer during proton irradiation. The structural and optical properties of perovskite remain intact up to high fluence levels. Although shallow trap states are induced by proton irradiation in perovskite bulk at low fluence levels, charges are released efficiently and are not detrimental to the cell's performance. This work highlights the potential of PSCs based on AZO TCO to be used for space applications and gives a deeper understanding of interfacial degradation due to proton irradiation.

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“…Ramadan and Im [16] investigated the film thickness uniformity in a planetary reactor by optimising multiple parameters. Among these commercial reactors, the inline MOCVD reactor has been successfully employed to deposit CdTe thin film by a group of researchers [17][18][19][20][21]; as such, the inline deposition process with a moving substrate is found to be beneficial to thin film uniformity and productivity [22,23]. However, current simulations on the inline process of CdTe growth are mainly conducted in a steady state, while the flow behaviour with the influence of susceptor moving speed still lacks a systematic investigation.…”

Section: Introductionmentioning

confidence: 99%

Numerical Analysis of an Inline Metal-Organic Chemical Vapour Deposition Process Based on Sliding-Mesh Modelling

Zhou

Yang

et al. 2020

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The flow behaviour under the influence of susceptor moving speed is a key factor for the fabrication of high-quality cadmium telluride (CdTe) thin films during the inline metal-organic chemical vapour deposition (MOCVD) process. The main purpose of this paper is to find a method to study the real-time dynamics of transport phenomena inside the reactor. The sliding mesh method is thus proposed and its feasibility is evaluated using computational fluid dynamics (CFD) modelling. A computational grid with 173,400 hexahedral cells is adopted through a grid sensitivity test validation. The simulations show that comparing to 2D modelling, the results of 3D modelling are found to be in good agreement with the experimental data for the temperature range of 628–728 K. Based on the velocity field, the temperature field and distribution of species concentration under different sampling time intervals of 60, 180 and 300 s, the thin film uniformity on both edges of the substrate is found to be influenced by the side effect of the baffle plate. The mass deposited on the substrate is further investigated under different susceptor moving speeds from 0.75 to 2.25 cm/min, and a moving speed between 0.75 to 1.13 cm/min is found to be effectively beneficial to the deposition process.

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Characterization of MOCVD Thin-Film CdTe Photovoltaics on Space-Qualified Cover Glass

Cited by 11 publications

References 20 publications

In situ investigation of perovskite solar cells’ efficiency and stability in a mimic stratospheric environment for high-altitude pseudo-satellites

In situ investigation of perovskite solar cells’ efficiency and stability in a mimic stratospheric environment for high-altitude pseudo-satellites

Radiation Hardness of Perovskite Solar Cells Based on Aluminum‐Doped Zinc Oxide Electrode Under Proton Irradiation

Numerical Analysis of an Inline Metal-Organic Chemical Vapour Deposition Process Based on Sliding-Mesh Modelling

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