Photoconductivity of Bulk-Film-Based Graphene Sheets

被引：90

作者：

Lv, Xin ^{[1
,2
]}

Huang, Yi ^{[1
,2
]}

Liu, Zhibo ^{[3
]}

Tian, Jianguo ^{[3
]}

Wang, Yan ^{[1
,2
]}

Ma, Yanfeng ^{[1
,2
]}

Liang, Jiajie ^{[1
,2
]}

Fu, Shipeng ^{[3
]}

Wan, Xiangjian ^{[1
,2
]}

Chen, Yongsheng ^{[1
,2
]}

机构：

[1] Nankai Univ, Key Lab Funct Polymer Mat, Tianjin 300071, Peoples R China

[2] Nankai Univ, Coll Chem, Inst Polymer Chem, Ctr Nanoscale Sci & Technol, Tianjin 300071, Peoples R China

[3] Nankai Univ, Minist Educ, Key Lab Weak Light Nonlinear Photon, Tianjin 300071, Peoples R China

来源：

SMALL | 2009年 / 5卷 / 14期

关键词：

carbon nanotubes; drop-cast films; graphene; photoconductivity; spin-coated films; CARBON NANOTUBES; ELASTIC PROPERTIES; SINGLE; OXIDE; TRANSPARENT;

D O I：

10.1002/smll.200900044

中图分类号：

O6 [化学];

学科分类号：

070301 [无机化学];

摘要：

Time-resolved photoconductivity measurements are carried out on. graphene films prepared by using soluble graphene oxide. High photocurrent generation efficiency is observed for these graphene-based films, and the relationships between their photoconductivity and different preparation methods, incident light intensity, external electric field, and photon energies are investigated. Higher photoconductivity is observed with higher photon energy at same incident light intensity. By fitting the experimental data to the Onsager model, the primary quantum yields for charge separation to generate bound electron-hole pairs and the initial ion-pair thermalization separation distance are calculated.

引用

页码：1682 / 1687

页数：6

共 39 条

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