Properties of Black Silicon Layers Fabricated by Different Techniques for Solar Cell Applications
Gagik Ayvazyan,
Karen Ayvazyan,
Levon Hakhoyan
et al.
Abstract:Black silicon (BS) layers coated with passivation films are widely used as antireflective frontal surfaces for solar cells. The most common BS fabrication techniques are reactive ion etching (RIE), metal‐assisted chemical etching, and laser‐induced processing. Herein, the structural and optical properties, as well as the minority carrier lifetime, of BS are compared with and without atomic layer deposited HfO2 passivation films produced by the above formation methods. The antireflection behavior of the samples… Show more
The wettability of black silicon (BSi) layers fabricated by reactive ion etching (RIE), metal‐assisted chemical etching (MACE), and laser‐induced etching (LIE) techniques was studied. The contact angles of wetting on the samples with deionized water and methylammonium iodide‐based perovskite solutions were determined. It has been found that the element composition and the enlargement area factor of BSi layers have a significant effect on their wettability. When tested with water, the RIE and MACE BSi layers exhibit hydrophobic properties, while the LIE BSi layer demonstrates hydrophilic properties due to the SiOx‐rich surface structures. It is also shown that aging leads to a decrease in the water contact angle. Upon exposure to perovskite solution droplets, BSi layers become highly lyophilic. Based on the Wenzel and Cassie‐Baxter models, the mechanisms responsible for the wetting states of the fabricated samples are identified. The results obtained provide valuable insights into the potential of using these layers in tandem perovskite/silicon solar cells.This article is protected by copyright. All rights reserved.
The wettability of black silicon (BSi) layers fabricated by reactive ion etching (RIE), metal‐assisted chemical etching (MACE), and laser‐induced etching (LIE) techniques was studied. The contact angles of wetting on the samples with deionized water and methylammonium iodide‐based perovskite solutions were determined. It has been found that the element composition and the enlargement area factor of BSi layers have a significant effect on their wettability. When tested with water, the RIE and MACE BSi layers exhibit hydrophobic properties, while the LIE BSi layer demonstrates hydrophilic properties due to the SiOx‐rich surface structures. It is also shown that aging leads to a decrease in the water contact angle. Upon exposure to perovskite solution droplets, BSi layers become highly lyophilic. Based on the Wenzel and Cassie‐Baxter models, the mechanisms responsible for the wetting states of the fabricated samples are identified. The results obtained provide valuable insights into the potential of using these layers in tandem perovskite/silicon solar cells.This article is protected by copyright. All rights reserved.
Исследована смачиваемость слоев черного кремния (b-Si), сформированных методами реактивного ионного травления, металл-стимулированного химического травления и лазерно-индуцированного травления. Определены краевые углы смачивания изготовленных образцов деионизованной водой, глицерином, дийодметаном и этиленгликолом. Показано, что поверхностная пленка окисла кремния и коэффициент увеличения площади слоев b-Si оказывают существенное влияние на их смачиваемость, варьируя от гидрофильных к гидрофобным свойствам.
Հետազոտվել է ռեակտիվ իոնային խածատման, մետաղով խթանմամբ քիմիական խածատման և լազերային խածատման մեթոդներով ձևավորված սև սիլիցիումի (b-Si) շերտերի թրջելիությունը: Գնահատվել են պատրաստված նմուշների դեիոնացված ջրով, գլիցերինով, դիյոդմեթանով և էթիլենգլիկոլով թրջման հպակային անկյունները: Ցույց է տրվել, որ սիլիցիումի օքսիդի մակերևութային թաղանթը և b-Si շերտերի մակերեսի մեծացման գործակիցը զգալի ազդեցություն ունեն թրջելիության վրա՝ ապահովելով հիդրոֆիլայինից մինչև հիդրոֆոբային հատկություններ:
The wettability of black silicon (b-Si) layers formed by reactive ion etching, metal-assisted chemical etching, and laser-induced etching has been studied. The wetting contact angles of the prepared samples with deionized water, glycerol, diiodomethane and ethylene glycol were determined. It has been shown that the silicon oxide surface film and the enlargement area factor of b-Si layers have a significant effect on their wettability, varying from hydrophilic to hydrophobic properties.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.