Performance Enhancement of Ultra-Thin Nanowire Array Solar Cells by Bottom Reflectivity Engineering

Yan, Xin; Liu, Haoran; Sibirev, N. V.; Zhang, Xia; Ren, Xiaomin

doi:10.3390/nano10020184

Cited by 9 publications

(5 citation statements)

References 43 publications

(48 reference statements)

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“…For the bottom part near the MgF2 substrate, the re-absorption is weak as the reflected light from the SiO2/MgF2 interface is difficult to reach the NW bottom. In future studies, the material and shape of the substrate and encapsulant need to be optimized to enhance the reabsorption by the NW bottom [30]. Figure 7 shows the current-voltage characteristics of the AE-HNA, HNA, and thin-film structures.…”

Section: Resultsmentioning

confidence: 99%

Absorption-Enhanced Ultra-Thin Solar Cells Based on Horizontally Aligned p–i–n Nanowire Arrays

et al. 2020

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A horizontally aligned GaAs p–i–n nanowire array solar cell is proposed and studied via coupled three-dimensional optoelectronic simulations. Benefiting from light-concentrating and light-trapping properties, the horizontal nanowire array yields a remarkable efficiency of 10.8% with a radius of 90 nm and a period of 5 radius, more than twice that of its thin-film counterpart with the same thickness. To further enhance the absorption, the nanowire array is placed on a low-refractive-index MgF2 substrate and capsulated in SiO2, which enables multiple reflection and reabsorption of light due to the refractive index difference between air/SiO2 and SiO2/MgF2. The absorption-enhancement structure increases the absorption over a broad wavelength range, resulting in a maximum conversion efficiency of 18%, 3.7 times higher than that of the thin-film counterpart, which is 3 times larger in GaAs material volume. This work may pave the way for the development of ultra-thin high-efficiency solar cells with very low material cost.

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Section: Resultsmentioning

confidence: 99%

Absorption-Enhanced Ultra-Thin Solar Cells Based on Horizontally Aligned p–i–n Nanowire Arrays

et al. 2020

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“…Not only geometry but also the orientation of SiNWs either as inclined (tilted, slanted) or vertically aligned plays a role for improved light trapping and therefore strong optical absorption is observed for inclined SiNW array [135][136][137][138][139]. Hong et al performed comprehensive simulation and modeling and discovered that the uppermost optical absorption efficiency of slanted SiNW (P = 800 nm and D/P = 0.7) is 33.45%, compared to vertically aligned SiNW (which is close to 28.36%) [140].…”

Section: Substrate Reflection R(θ λ)mentioning

confidence: 99%

Design of Silicon Nanowire Array for PEDOT:PSS-Silicon Nanowire-Based Hybrid Solar Cell

2020

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Among various photovoltaic devices, the poly 3, 4-ethylenedioxythiophene:poly styrenesulfonate (PEDOT:PSS) and silicon nanowire (SiNW)-based hybrid solar cell is getting momentum for the next generation solar cell. Although, the power-conversion efficiency of the PEDOT:PSS–SiNW hybrid solar cell has already been reported above 13% by many researchers, it is still at a primitive stage and requires comprehensive research and developments. When SiNWs interact with conjugate polymer PEDOT:PSS, the various aspects of SiNW array are required to optimize for high efficiency hybrid solar cell. Therefore, the designing of silicon nanowire (SiNW) array is a crucial aspect for an efficient PEDOT:PSS–SiNW hybrid solar cell, where PEDOT:PSS plays a role as a conductor with an transparent optical window just-like as metal-semiconductor Schottky solar cell. This short review mainly focuses on the current research trends for the general, electrical, optical and photovoltaic design issues associated with SiNW array for PEDOT:PSS–SiNW hybrid solar cells. The foremost features including the morphology, surface traps, doping of SiNW, which limit the efficiency of the PEDOT:PSS–SiNW hybrid solar cell, will be addressed and reviewed. Finally, the SiNW design issues for boosting up the fill-factor, short-circuit current and open-circuit voltage will be highlighted and discussed.

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“…Nevertheless, compared with homojunction devices, hybrid heterojunction devices are still greatly limited for commercialization due to low efficiencies and stability. Different optimization pathways have been reported including 1) morphology regulation of nanostructured inorganic semiconductor layers; [26][27][28] 2) introduction of back-surface field (BSF) layers or/and front-surface field (FSF) layers; [23,29,30] 3) introduction of antireflective coatings (ARCs); [31][32][33] 4) conductivity enhancement of carrier transport layers; [34][35][36] 5) surface/interface passivation, [37,38] etc. To date, an efficiency of 13% is attained for GaAs/polymer SCs, [29] which is still far from the highest efficiency (over 20%) of Si HSCs.…”

Section: Introductionmentioning

confidence: 99%

Recent Advances in III–V Compounds/Polymer Hybrid Solar Cells

Chen

Guo

et al. 2023

Solar RRL

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The combination of III–V compound semiconductor materials and organic semiconductor materials to construct hybrid solar cells is a potential pathway to resolve the problems of conventional doped p–n junction solar cells, such as complexities in fabrication process and high costs. This review presents the recent progress of organic–inorganic hybrid solar cells based on polymers and III–V semiconductors, from materials to devices. The available growth process for planar/nanostructured III–V semiconductor materials, along with patterning and etching processes for nanostructured materials, are reviewed. As an emphasis of this review, advanced device structure designs are reviewed for facilitation of carrier collection and high efficiency, at planar structure level and nanowire structure level, respectively. Optimization pathways for efficiency enhancement are discussed with respect to polymer layers and surface/interface passivation, respectively. Finally, perspectives on the future development of such hybrid cells are presented.

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Performance Enhancement of Ultra-Thin Nanowire Array Solar Cells by Bottom Reflectivity Engineering

Cited by 9 publications

References 43 publications

Absorption-Enhanced Ultra-Thin Solar Cells Based on Horizontally Aligned p–i–n Nanowire Arrays

Absorption-Enhanced Ultra-Thin Solar Cells Based on Horizontally Aligned p–i–n Nanowire Arrays

Design of Silicon Nanowire Array for PEDOT:PSS-Silicon Nanowire-Based Hybrid Solar Cell

Recent Advances in III–V Compounds/Polymer Hybrid Solar Cells

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