Progress and future view of silicon space solar cells in Japan

Suzuki, Akio; Kaneiwa, M.; Saga, T.; Matsuda, Sumio

doi:10.1109/16.792007

Cited by 10 publications

(3 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…First, the NiO/ ZnO solar cells consist of NiO and ZnO "thin films" (less than 1 μm), where the reductive effect of the minority-carrier diffusion length caused by the proton radiation damage is small. 29,30) Second, the NiO/ZnO solar cells consist of widebandgap semiconductors whose atoms are not easily displaced by proton irradiation. 11,18,31,32) Third, the NiO/ZnO solar cells consist of ZnO, which easily recover from proton radiation damage because zinc interstitials formed by the proton irradiation could diffuse easily and recombine with the zinc vacancies.…”

mentioning

confidence: 99%

Proton irradiation effects on NiO/ZnO visible-light-transparent solar cells for space applications

Kato¹,

Sugiyama²

2021

Jpn. J. Appl. Phys.

View full text Add to dashboard Cite

In this study, the feasibility of in-space applications of a NiO/ZnO visible-light-transparent solar cell was investigated. The current density–voltage and external quantum efficiency measurements were conducted under air mass (AM) 0 conditions, and a short-circuit current density under AM 0 increased 2.6 times compared to that under AM 1.5. This significant increase is attributed to the absorption of only ultraviolet light with a wavelength of less than 400 nm, the irradiance of which is especially large in AM 0. Moreover, the degradation of photovoltaic properties of NiO/ZnO solar cells after 380 keV proton irradiation was evaluated to determine the possibility of long-term operation in space. No significant degradation was observed at a proton fluence of less than 3 × 1014 cm−2– 1 × 1015 cm−2. The NiO/ZnO solar cells showed the potential of a higher radiation tolerance under proton irradiation, as compared to Cu(In,Ga)Se2 (CIGS) or GaAs-based solar cells.

show abstract

mentioning

confidence: 99%

Proton irradiation effects on NiO/ZnO visible-light-transparent solar cells for space applications

Kato¹,

Sugiyama²

2021

Jpn. J. Appl. Phys.

View full text Add to dashboard Cite

show abstract

“…30) The thickness of a single crystal Si space-based solar cell developed using an indirect transition semiconductor is on the order of 10-100 μm. 31) In contrast, the thickness of a NiO/ZnO solar cell is less than 1 μm because it is fabricated using direct transition semiconductor materials. Second, the NiO/ZnO solar cells consist of using wide bandgap semiconductors, which possess a high threshold displacement energy (E d ).…”

Section: Resultsmentioning

confidence: 99%

Electron irradiation resistance of NiO/ZnO visible-light-transparent solar cells

Kato

Sugiyama

2020

Jpn. J. Appl. Phys.

View full text Add to dashboard Cite

In this study, the degradation of photovoltaic properties of NiO/ZnO visible-light-transparent solar cells after 2 MeV electron irradiation is investigated to explore the possibility of space applications. No significant degradation is observed after 2 MeV electron irradiation at the fluence of 1 × 1017 cm−2. The electrical performance of NiO/ZnO solar cells exhibited a higher electron irradiation resistance than that of polycrystalline Si or Cu(In,Ga)Se2 solar cells. The high electron irradiation resistance of NiO/ZnO solar cells is thought to be due to large threshold displacement energies of NiO and ZnO, and also to the recovery from radiation-induced damage at room temperature. These results represent the first step toward the realization of the practical application of NiO/ZnO solar cells in space.

show abstract

“…In most c-Si photovoltaic modules, 50 VOof the cost is associated with the c-Si wafer [1]. Therefore, a highly effective approach aimed at cost reduction in crystalline and multi-crystalline c-Si solar cells is better material utilization by using thinner (-1-20 pm) films.…”

Section: Introductionmentioning

confidence: 99%

Diffraction grating structures in solar cells

Zaidi

Gee

Ruby

Conference Record of the Twenty-Eighth IEEE Photovoltaic Specialists Conference - 2000 (Cat. No.00CH37036)

View full text Add to dashboard Cite

Sub-wavelength periodic texturing (gratings) of crystalline-silicon (c-Si) surfaces for solar cell applications can be designed for maximizing optical absorption in thin c-Si films. We have investigated c-Si grating structures using rigorous modeling, hemispherical reflectance, and internal quantum efficiency measurements. Model calculations predict almost -100 % energy coupling into obliquely propagating diffi-action orders. By fabrication and optical characterization of a wide range of ID & 2D c-Si grating structures, we have achieved broadband, low (-5 Vo) reflectance without an anti-reflection film. By integrating grating structures into conventional solar cell designs, we have demonstrated short-circuit current density enhancements of 3.4 and 4.1 mA/cm2 for rectangular and triangular 1D grating structures compared to planar controls. The effective path length enhancements due to these gratings were 2.2 and 1.7, respectively. Optimized 2D gratings are expected to have even better performance.

show abstract

Progress and future view of silicon space solar cells in Japan

Cited by 10 publications

References 17 publications

Proton irradiation effects on NiO/ZnO visible-light-transparent solar cells for space applications

Proton irradiation effects on NiO/ZnO visible-light-transparent solar cells for space applications

Electron irradiation resistance of NiO/ZnO visible-light-transparent solar cells

Diffraction grating structures in solar cells

Contact Info

Product

Resources

About