InGaP/GaAs/Ge triple‐junction solar cells with ZnO nanowires

Hou, Jei Li; Chang, Shoou‐Jinn; Hsueh, Ting-Jen; Wu, Cheng‐Hsien; Weng, W. Y.; Shieh, Jia Min

doi:10.1002/pip.2304

Cited by 13 publications

(6 citation statements)

References 18 publications

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“…Leem et al used a composite DLARC of SiO 2 /TiO 2 , and on depositing, the PCE was improved from 28.28% to 30.72% [304]. Hou et al deposited two variants of ARC consisting of SLARC SiNx and TiO 2 /Al 2 O 3 DLARC on the GaInP/GaAs/Ge multi-junction cell and the performance was improved from 23.45% to 27.17%, and to 29.91% corresponding to SLARC and DLARC [305]. Another study by Sertel et al analyzed the effect of Ta 2 O 5 single-layer ARC and SiO 2 /Ta 2 O 5 double-layer ARC on GaInP/GaAs/Ge triple-junction solar cell grown by Molecular beam epitaxy method.…”

Section: Multi-junction Solar Cellsmentioning

confidence: 99%

Anti-Reflective Coating Materials: A Holistic Review from PV Perspective

Natarajan

Pugazhendhi

Elavarasan³

et al. 2020

Energies

130

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The solar photovoltaic (PV) cell is a prominent energy harvesting device that reduces the strain in the conventional energy generation approach and endorses the prospectiveness of renewable energy. Thus, the exploration in this ever-green field is worth the effort. From the power conversion efficiency standpoint of view, PVs are consistently improving, and when analyzing the potential areas that can be advanced, more and more exciting challenges are encountered. One such crucial challenge is to increase the photon availability for PV conversion. This challenge is solved using two ways. First, by suppressing the reflection at the interface of the solar cell, and the other way is to enhance the optical pathlength inside the cell for adequate absorption of the photons. Our review addresses this challenge by emphasizing the various strategies that aid in trapping the light in the solar cells. These strategies include the usage of antireflection coatings (ARCs) and light-trapping structures. The primary focus of this study is to review the ARCs from a PV application perspective based on various materials, and it highlights the development of ARCs from more than the past three decades covering the structure, fabrication techniques, optical performance, features, and research potential of ARCs reported. More importantly, various ARCs researched with different classes of PV cells, and their impact on its efficiency is given a special attention. To enhance the optical pathlength, and thus the absorption in solar PV devices, an insight about the advanced light-trapping techniques that deals with the concept of plasmonics, spectral modification, and other prevailing innovative light-trapping structures approaching the Yablonovitch limit is discussed. An extensive collection of information is presented as tables under each core review section. Further, we take a step forward to brief the effects of ageing on ARCs and their influence on the device performance. Finally, we summarize the review of ARCs on the basis of structures, materials, optical performance, multifunctionality, stability, and cost-effectiveness along with a master table comparing the selected high-performance ARCs with perfect AR coatings. Also, from the discussed significant challenges faced by ARCs and future outlook; this work directs the researchers to identify the area of expertise where further research analysis is needed in near future.

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Section: Multi-junction Solar Cellsmentioning

confidence: 99%

Anti-Reflective Coating Materials: A Holistic Review from PV Perspective

Natarajan

Pugazhendhi

Elavarasan³

et al. 2020

Energies

130

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“…Antireflective (AR) coatings based on the ZnO nanostructures have received increasing interest during the past few decades and may be considered as one of the promising candidates due to the excellent optical properties and the controllable anisotropic growth of ZnO. [1][2][3] In particular, ZnO can easily be synthesized as various forms of nanostructures such as nanowires, nanobelts, nanoplatelets, and nanorods using well-developed methods, demonstrated by many research groups. [4][5][6][7][8] However, as promising candidates, most work has focused on the nanowire-based AR coatings.…”

Section: Introductionmentioning

confidence: 99%

Optical design of ZnO-based antireflective layers for enhanced GaAs solar cell performance

Lee

Kim

et al. 2016

Phys. Chem. Chem. Phys.

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A series of hierarchical ZnO-based antireflection coatings with different nanostructures (nanowires and nanosheets) is prepared hydrothermally, followed by means of RF sputtering of MgF2 layers for coaxial nanostructures. Structural analysis showed that both ZnO had a highly preferred orientation along the 〈0001〉 direction with a highly crystalline MgF2 shell coated uniformly. However, a small amount of Al was present in nanosheets, originating from Al diffusion from the Al seed layer, resulting in an increase of the optical bandgap. Compared with the nanosheet-based antireflection coatings, the nanowire-based ones exhibited a significantly lower reflectance (∼2%) in ultraviolet and visible light wavelength regions. In particular, they showed perfect light absorption at wavelength less than approximately 400 nm. However, a GaAs single junction solar cell with nanosheet-based antireflection coatings showed the largest enhancement (43.9%) in power conversion efficiency. These results show that the increase of the optical bandgap of the nanosheets by the incorporation of Al atoms allows more photons enter the active region of the solar cell, improving the performance.

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“…These tunnel junctions are typically very thin to allow the tunneling mechanism to dominate the majority carrier transport [2]. Among solar technologies, TJ solar cells have attracted increasing attention owing to their very high conversion efficiencies [3,4] as well as long term stability [5][6][7]. TJ solar cells based on III-V semiconductors are being evaluated globally in concentrator photovoltaic (CPV) systems designed to supplement electricity generation for utility companies.…”

Section: Introductionmentioning

confidence: 99%

Damp‐Heat Induced Performance Degradation for InGaP/GaAs/Ge Triple‐Junction Solar Cell

Hong

Huang

Uen

et al. 2014

Journal of Nanomaterials

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We performed accelerated tests on sealed and nonsealed InGaP/InGaAs/Ge triple-junction (TJ) solar cells in a complex high temperature and high humidity environment and investigated the electrical properties over time. The degradation of energy conversion efficiency in nonsealed cells was found to be more serious than that in sealed cells. The short-circuit current (ISC), open-circuit voltage (VOC), and fill factor (FF) of sealed cells changed very slightly, though the conversion efficiency decreased 3.6% over 500 h of exposure. This decrease of conversion efficiency was suggested to be due to the deterioration of silicone encapsulant. TheISC,VOC, and FF of nonsealed cells decreased with increasing exposure time. By EL and SEM analysis, the root causes of degradation can be attributed to the damage and cracks near the edge of cells induced by the moisture ingress. It resulted in shunt paths that lead to a deterioration of the conversion efficiency of solar cell by increasing the leakage current, as well as decreasing open-circuit voltage and fill factor of nonsealed solar cells.

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InGaP/GaAs/Ge triple‐junction solar cells with ZnO nanowires

Cited by 13 publications

References 18 publications

Anti-Reflective Coating Materials: A Holistic Review from PV Perspective

Anti-Reflective Coating Materials: A Holistic Review from PV Perspective

Optical design of ZnO-based antireflective layers for enhanced GaAs solar cell performance

Damp‐Heat Induced Performance Degradation for InGaP/GaAs/Ge Triple‐Junction Solar Cell

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