Effect of graphite oxide solution concentration on the properties of multilayer graphene

Abstrak

<p> <span style="color: rgb(0, 0, 0); font-family: Lora, serif; font-size: 20px;">This paper reports the influence of&nbsp;</span><named-content content-type="sem:AIPTh1.2" rid="kwd1.5" style="color: rgb(0, 0, 0); font-family: Lora, serif; font-size: 20px;" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:oasis="http://www.niso.org/standards/z39-96/ns/oasis-exchange/table" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">graphite</named-content><span style="color: rgb(0, 0, 0); font-family: Lora, serif; font-size: 20px;">&nbsp;oxide (GO) solution concentration on the optical and&nbsp;</span><named-content content-type="sem:AIPTh1.2" rid="kwd1.4" style="color: rgb(0, 0, 0); font-family: Lora, serif; font-size: 20px;" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:oasis="http://www.niso.org/standards/z39-96/ns/oasis-exchange/table" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">electrical properties</named-content><span style="color: rgb(0, 0, 0); font-family: Lora, serif; font-size: 20px;">&nbsp;of&nbsp;</span><named-content content-type="sem:AIPTh1.2" rid="kwd1.3" style="color: rgb(0, 0, 0); font-family: Lora, serif; font-size: 20px;" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:oasis="http://www.niso.org/standards/z39-96/ns/oasis-exchange/table" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">multilayer</named-content><span style="color: rgb(0, 0, 0); font-family: Lora, serif; font-size: 20px;">&nbsp;</span><named-content content-type="sem:AIPTh1.2" rid="kwd1.2" style="color: rgb(0, 0, 0); font-family: Lora, serif; font-size: 20px;" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:oasis="http://www.niso.org/standards/z39-96/ns/oasis-exchange/table" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">graphene</named-content><span style="color: rgb(0, 0, 0); font-family: Lora, serif; font-size: 20px;">&nbsp;(MLG)&nbsp;</span><named-content content-type="sem:AIPTh1.2" rid="kwd1.1" style="color: rgb(0, 0, 0); font-family: Lora, serif; font-size: 20px;" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:oasis="http://www.niso.org/standards/z39-96/ns/oasis-exchange/table" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">films.</named-content><named-content content-type="sem:AIPTh1.2" rid="kwd1.2" style="color: rgb(0, 0, 0); font-family: Lora, serif; font-size: 20px;" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:oasis="http://www.niso.org/standards/z39-96/ns/oasis-exchange/table" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">Graphene</named-content><span style="color: rgb(0, 0, 0); font-family: Lora, serif; font-size: 20px;">&nbsp;oxide (GrO)&nbsp;</span><named-content content-type="sem:AIPTh1.2" rid="kwd1.1" style="color: rgb(0, 0, 0); font-family: Lora, serif; font-size: 20px;" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:oasis="http://www.niso.org/standards/z39-96/ns/oasis-exchange/table" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">films</named-content><span style="color: rgb(0, 0, 0); font-family: Lora, serif; font-size: 20px;">&nbsp;were&nbsp;</span><named-content content-type="sem:AIPTh1.2" rid="kwd1.8" style="color: rgb(0, 0, 0); font-family: Lora, serif; font-size: 20px;" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:oasis="http://www.niso.org/standards/z39-96/ns/oasis-exchange/table" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">deposited</named-content><span style="color: rgb(0, 0, 0); font-family: Lora, serif; font-size: 20px;">&nbsp;on the&nbsp;</span><named-content content-type="sem:AIPTh1.2" rid="kwd1.10" style="color: rgb(0, 0, 0); font-family: Lora, serif; font-size: 20px;" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:oasis="http://www.niso.org/standards/z39-96/ns/oasis-exchange/table" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">glass</named-content><span style="color: rgb(0, 0, 0); font-family: Lora, serif; font-size: 20px;">&nbsp;substrates by&nbsp;</span><named-content content-type="sem:AIPTh1.2" rid="kwd1.9" style="color: rgb(0, 0, 0); font-family: Lora, serif; font-size: 20px;" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:oasis="http://www.niso.org/standards/z39-96/ns/oasis-exchange/table" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">spin coating</named-content><span style="color: rgb(0, 0, 0); font-family: Lora, serif; font-size: 20px;">&nbsp;aqueous solutions of GO with different concentrations (7, 8, 9, 10 and 11 mg/ml). The GrO&nbsp;</span><named-content content-type="sem:AIPTh1.2" rid="kwd1.1" style="color: rgb(0, 0, 0); font-family: Lora, serif; font-size: 20px;" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:oasis="http://www.niso.org/standards/z39-96/ns/oasis-exchange/table" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">films</named-content><span style="color: rgb(0, 0, 0); font-family: Lora, serif; font-size: 20px;">&nbsp;were then thermally reduced at temperature of 500&deg;C in argon flow for half an hour to form MLG&nbsp;</span><named-content content-type="sem:AIPTh1.2" rid="kwd1.1" style="color: rgb(0, 0, 0); font-family: Lora, serif; font-size: 20px;" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:oasis="http://www.niso.org/standards/z39-96/ns/oasis-exchange/table" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">films.</named-content><span style="color: rgb(0, 0, 0); font-family: Lora, serif; font-size: 20px;">&nbsp;Both the transmittance and sheet resistance decreased with the GO concentration from 8 mg/ml to 9 mg/ml, possibly due to thicker and uniform coverage of MLG over the substrate. However, the transmittance and sheet resistance increased rapidly as the GO concentration reached 11 mg/ml, which can be attributed to poor&nbsp;</span><named-content content-type="sem:AIPTh1.2" rid="kwd1.1" style="color: rgb(0, 0, 0); font-family: Lora, serif; font-size: 20px;" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:oasis="http://www.niso.org/standards/z39-96/ns/oasis-exchange/table" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">film</named-content><span style="color: rgb(0, 0, 0); font-family: Lora, serif; font-size: 20px;">&nbsp;quality. The MLG&nbsp;</span><named-content content-type="sem:AIPTh1.2" rid="kwd1.1" style="color: rgb(0, 0, 0); font-family: Lora, serif; font-size: 20px;" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:oasis="http://www.niso.org/standards/z39-96/ns/oasis-exchange/table" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">film</named-content><span style="color: rgb(0, 0, 0); font-family: Lora, serif; font-size: 20px;">&nbsp;obtained at concentration of 10 mg/ml showed the highest transmittance/sheet resistance ratio with 69 % transmittance and sheet resistance of 292 &plusmn; 63 k&Omega;/sq. The optimum MLG&nbsp;</span><named-content content-type="sem:AIPTh1.2" rid="kwd1.1" style="color: rgb(0, 0, 0); font-family: Lora, serif; font-size: 20px;" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:oasis="http://www.niso.org/standards/z39-96/ns/oasis-exchange/table" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">film</named-content><span style="color: rgb(0, 0, 0); font-family: Lora, serif; font-size: 20px;">&nbsp;was utilized as counter&nbsp;</span><named-content content-type="sem:AIPTh1.2" rid="kwd1.6" style="color: rgb(0, 0, 0); font-family: Lora, serif; font-size: 20px;" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:oasis="http://www.niso.org/standards/z39-96/ns/oasis-exchange/table" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">electrode</named-content><span style="color: rgb(0, 0, 0); font-family: Lora, serif; font-size: 20px;">&nbsp;in dye sensitized solar cells based on ZnO nanorods.</span></p>

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