Interface modification for high-efficient quantum dot sensitized solar cells using ultrathin aluminum nitride coating

Wei, Huiyun; Qiu, Peng; Peng, Mingzeng; Wu, Qixin; Liu, Sanjie; An, Yunlai; He, Yingfeng; Song, Yimeng

doi:10.1016/j.apsusc.2019.01.144

Cited by 21 publications

(8 citation statements)

References 39 publications

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“…Quantum dot solar cells (QDSCs) is an emerging candidate in the third generation of solar cells. Some unique qualities of QDSCs are tunable bandgaps, high absorption coefficients, and multiple exciton effects [351,352]. Lay et al fabricated an innovative InGaAs quantum dots-in-a-well solar cells which exhibited a short-circuit current density of 17.4 mA/cm 2 , and the PCE of 8.7%.…”

Section: Other Types Of Solar Cellmentioning

confidence: 99%

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

Natarajan

Pugazhendhi

Elavarasan³

et al. 2020

Energies

136

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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: Other Types Of Solar Cellmentioning

confidence: 99%

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

Natarajan

Pugazhendhi

Elavarasan³

et al. 2020

Energies

136

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“…光生载流子不足(光吸收范围窄)、电荷分离效率低(能带排列不理想)、电荷收集效率低(电荷复合严重)是影响器件性能的主要原因 [4,18,20] . 迄今为止, 研究人员已经探索开发了各种有效策略来改善光伏性能, 集中在增强载流子产生、促进载流子分离和加速电荷收集等方面 [3,4,11,20] . [26] .…”

Section: 矿材料体系优异的光电特性同时表现出较高的钙unclassified

Band and interface engineering for quantum dot solar cells

Zhou

et al. 2021

Sci. Sin.-Tech.

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“…The onset voltage and PLQY were improved due to the suppression of the charge recombination and increase of the electron lifetimes by optimizing Al 2 O 3 layer thickness. Zheng et al introduced ultrathin AlN modification layer (< 1 nm) by PEALD on TiO 2 /QDs surfaces for the first time to Wavenumber (cm -1 ) 95 . Thus, the efficiency was significantly improved from 8.27% to 9.31%.…”

Section: Interface Engineeringmentioning

confidence: 99%

Atomic layer deposition for quantum dots based devices

Zhou

Liu

Wen

et al. 2020

Opto-Electronic Advances

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Quantum dots (QDs) are promising candidates for the next-generation optical and electronic devices due to the outstanding photoluminance efficiency, tunable bandgap and facile solution synthesis. Nevertheless, the limited optoelectronic performance and poor lifetime of QDs devices hinder their further applications. As a gas-phase surface treatment method, atomic layer deposition (ALD) has shown the potential in QDs surface modification and device construction owing to the atomic-level control and excellent uniformity/conformality. In this perspective, the attempts to utilize ALD techniques in QDs modification to improve the photoluminance efficiency, stability, carrier mobility, as well as interfacial carrier utilization are introduced. ALD proves to be successful in the photoluminance quantum yield (PLQY) enhancement due to the elimination of QDs surface dangling bonds and defects. The QDs stability and devices lifetime are improved greatly through the introduction of ALD barrier layers. Furthermore, the carrier transport is ameliorated efficiently by infilling interstitial spaces during ALD process. Attributed to the ultra-thin and dense coating on the interface, the improvement on optoelectronic performance is achieved. Finally, the challenges of ALD applications in QDs at present and several prospects including ALD process optimization, in-situ characterization and computational simulations are proposed.

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Interface modification for high-efficient quantum dot sensitized solar cells using ultrathin aluminum nitride coating

Cited by 21 publications

References 39 publications

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

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

Band and interface engineering for quantum dot solar cells

Atomic layer deposition for quantum dots based devices

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