Role of temperature and oxygen content on structural and electrical properties of LaBaCo2O5+δ thin films

Mace, Brennan; Harrell, Zach; Chen, Chonglin; Enriquez, Erik; Chen, Aiping; Jia, Q. X.

doi:10.1063/1.5009245

Cited by 8 publications

(2 citation statements)

References 38 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It implies that the memory cell in HRS is dominated by Ohmic‐like conduction in the low voltage region and Child's square law in the high voltage region, respectively. [ 39–41 ] As a contrast, the linearity of the fitting curve (blue fitting line) with a slope of ≈1 in LRS indicates the Ohmic conduction behavior, suggesting that the electrons transport through the conductive filaments in the CsSnBr 3 switching layer. [ 42 ] The similar results are also observed for the I – V characteristics during the reset process in negative sweep (Figure 4b).…”

Section: Resultsmentioning

confidence: 99%

Fabrication of Flexible Resistive Switching Devices Based on Lead‐Free All‐Inorganic CsSnBr₃ Perovskite Using a One‐Step Chemical Vapor Deposition Method

Wang

Lin

Zhu

et al. 2020

Adv Elect Materials

View full text Add to dashboard Cite

devices, including solar cells, photodetectors, light-emitting diodes, and resistive switching (RS) memories. [3-5] However, there are still some obstacles that limiting their industrial applications. [6] The limitation of this family of materials was mainly focused on twofold: first, the organic cations in hybrid organic-inorganic perovskites bring about moisture sensitivity and thermal instability. Second, the lead toxicity constitutes a major concern, hindering its implementation in electronics. [7] Those issues prevent them amenable to a wide variety of device configurations for long term applications. Therefore, the development of alternative lead-free halide perovskites is imperative for the promotion of perovskite-based RS devices. Recently, strategies are devoted to replace lead with nontoxic metal element that has the similar electronic structure. Tin (Sn), is regarded as one of the most feasible replacements for lead, which fulfill the coordination, ionic size, and charge balance prerequisites in perovskite structure. [8-10] More importantly, Sn-based halide perovskites exhibit relatively similar electronic performance, including higher charge carrier mobility and tunable direct bandgap, as compared with Pb-based perovskites. [11,12] In addition, the replacement of organic cation by cesium (Cs) could significantly enhances the thermal stability of the halide perovskites. [13] Mi et al. depict the preparation and properties of CsSnBr 3 , exhibiting higher stability toward heat and moisture than its organic counterparts. [14] Hence, based on the afore-mentioned considerations, it is rationale to investigate CsSnBr 3 as the lead-free all-inorganic perovskite in electronic applications. RS devices, based on inherent switching effects in twoterminal structures, have attracted tremendous attentions due to their excellent advantages, including the high read/ write speed, low programming voltage and high endurance, as compared with traditional flash memories. [15-17] To date, various functional materials, such as traditional metal oxides [18] and perovskite oxides, [19] have been proposed to adopted as the switching media to construct RS devices. In special, recent efforts have been devoted to investigate various halide perovskites as the RS switching layer, including the organicinorganic hybrid perovskite, [20] inorganic halide perovskite, [21] Resistive switching (RS) devices have evolved as one of the most promising candidates in the memory filed due to their excellent endurance and retention, fast switching speed, and extra-high storage density capability. However, the coexistence of toxic lead cations and low RS performance have largely limited the application of halide perovskite in nonvolatile memory filed. Herein, the lead-free all-inorganic perovskite CsSnBr 3 films are synthesized on flexible polyimide (PI) substrates through a one-step chemical vapor deposition (CVD) method to construct environmentally friendly RS devices. The RS devices with Pt/CsSnBr 3 /Pt/PI structure exhibit reliable and reproduc...

show abstract

Section: Resultsmentioning

confidence: 99%

Fabrication of Flexible Resistive Switching Devices Based on Lead‐Free All‐Inorganic CsSnBr₃ Perovskite Using a One‐Step Chemical Vapor Deposition Method

Wang

Lin

Zhu

et al. 2020

Adv Elect Materials

View full text Add to dashboard Cite

show abstract

“…For example, LBCO is a promising candidate for cathode materials in intermediate-temperature SOFC. [2][3][4][5][6][7][8][9] Recently, epitaxial growth of LnBCO films were successfully performed using pulsed laser deposition (PLD) method on cubic single crystal substrates, such as MgO, SrTiO 3 , LaAlO 3 , and NdGaO 3 , [10][11][12][13][14][15][16][17][18][19][20][21][22][23][24] paving ways to thinfilm functional devices based on LnBCO.…”

mentioning

confidence: 99%

Anomalous Resistance of LBCO Gas Sensors Induced by Electro-Catalyzed Surface O-H Reactions

Shaibo¹,

Zhang²,

Guo³

2020

J. Electrochem. Soc.

View full text Add to dashboard Cite

Anomalous sensor behavior of a LBCO gas sensor in response to gas switching in O 2 /H 2 ambient is demonstrated. Developed from a LBCO thin film epitaxial-grown using pulsed laser deposition, the gas sensor was also comparatively tested under different switching conditions of O 2 /H 2 , O 2 /N 2 and O 2 /Ar. In addition, temperature dependence of sensor resistance was characterized in the gas mixture of 4% H 2 + 96% N 2 diluted with different levels of oxygen. The anomalous sensor behavior was ascribed to an electro-catalyzed H-O reaction in O 2 + H 2 mixture mediated by the LBCO film, and detailed discussion of the reaction mechanism was given for the first time. Proved to have extremely high sensitivity to H 2 , the LBCO sensor offers great potential in sensitive detection of H 2 as well as other reducing gases.

show abstract

A Review of Piezoelectric and Magnetostrictive Biosensor Materials for Detection of COVID‐19 and Other Viruses

et al. 2020

View full text Add to dashboard Cite

fever with or without chills, chest tightness, dry cough, and shortness of breath, while developing patchy to diffuse infiltration of the lungs, as shown radiographically in Figure 1. Identifying and monitoring SARS-CoV-2 infection has become crucially important. A recent projection of the transmission dynamics of SARS-CoV-2 [2] showed that longitudinal serological studies are desperately needed to determine the extent and duration of immunity to SARS-CoV-2. Even in the event of apparent elimination, maintenance of SARS-CoV-2 surveillance is still needed because of a possible resurgence of contagion. In the past, notable viruses have emerged suddenly from obscurity or anonymity, provoking concern from the point of view of immunology regarding their sustained epidemic transmission in naive human populations. More than 70% of these infections have been zoonotic, entering either directly from wild animal reservoirs or indirectly via an intermediate domestic animal host. [3] Ebola virus, avian influenza, human immunodeficiency virus (HIV), and SARS are all examples of zoonoses that have emerged from wild animals, presenting an increasingly serious threat to human health and economies worldwide. Figure 2 shows the trend in the number of people infected with SARS-CoV-2. [4] The spread of the severe acute respiratory syndrome coronavirus has changed the lives of people around the world with a huge impact on economies and societies. The development of wearable sensors that can continuously monitor the environment for viruses may become an important research area. Here, the state of the art of research on biosensor materials for virus detection is reviewed. A general description of the principles for virus detection is included, along with a critique of the experimental work dedicated to various virus sensors, and a summary of their detection limitations. The piezoelectric sensors used for the detection of human papilloma, vaccinia, dengue, Ebola, influenza A, human immunodeficiency, and hepatitis B viruses are examined in the first section; then the second part deals with magnetostrictive sensors for the detection of bacterial spores, proteins, and classical swine fever. In addition, progress related to early detection of COVID-19 (coronavirus disease 2019) is discussed in the final section, where remaining challenges in the field are also identified. It is believed that this review will guide material researchers in their future work of developing smart biosensors, which can further improve detection sensitivity in monitoring currently known and future virus threats.

show abstract

Role of temperature and oxygen content on structural and electrical properties of LaBaCo2O5+δ thin films

Cited by 8 publications

References 38 publications

Fabrication of Flexible Resistive Switching Devices Based on Lead‐Free All‐Inorganic CsSnBr₃ Perovskite Using a One‐Step Chemical Vapor Deposition Method

Fabrication of Flexible Resistive Switching Devices Based on Lead‐Free All‐Inorganic CsSnBr₃ Perovskite Using a One‐Step Chemical Vapor Deposition Method

Anomalous Resistance of LBCO Gas Sensors Induced by Electro-Catalyzed Surface O-H Reactions

A Review of Piezoelectric and Magnetostrictive Biosensor Materials for Detection of COVID‐19 and Other Viruses

Contact Info

Product

Resources

About

Role of temperature and oxygen content on structural and electrical properties of LaBaCo2O5+δ thin films

Cited by 8 publications

References 38 publications

Fabrication of Flexible Resistive Switching Devices Based on Lead‐Free All‐Inorganic CsSnBr3 Perovskite Using a One‐Step Chemical Vapor Deposition Method

Fabrication of Flexible Resistive Switching Devices Based on Lead‐Free All‐Inorganic CsSnBr3 Perovskite Using a One‐Step Chemical Vapor Deposition Method

Anomalous Resistance of LBCO Gas Sensors Induced by Electro-Catalyzed Surface O-H Reactions

A Review of Piezoelectric and Magnetostrictive Biosensor Materials for Detection of COVID‐19 and Other Viruses

Contact Info

Product

Resources

About

Fabrication of Flexible Resistive Switching Devices Based on Lead‐Free All‐Inorganic CsSnBr₃ Perovskite Using a One‐Step Chemical Vapor Deposition Method

Fabrication of Flexible Resistive Switching Devices Based on Lead‐Free All‐Inorganic CsSnBr₃ Perovskite Using a One‐Step Chemical Vapor Deposition Method