Room temperature nitrogen dioxide sensors based on N719-dye sensitized amorphous zinc oxide sensors performed under visible-light illumination
Room temperature nitrogen dioxide sensors based on N719-dye sensitized amorphous zinc oxide sensors performed under visible-light illumination
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基于 N719 染料敏化非晶氧化锌传感器的室温二氧化氮传感器在可见光照明下进行
DOI：
10.1016/j.snb.2014.11.090
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发表时间：
2015-03
影响因子：
8.4
通讯作者：
Debliquy Marc
中科院分区：
文献类型：
--
作者：
Zhang Chao;Wang Jie;Olivier Marie-Georges;Debliquy Marc
用N-719染料浸渍法在溅射态非晶氧化锌（ZnO）薄膜上制备了室温下工作的金属氧化物气敏元件。非晶ZnO薄膜具有更高的电导率相比，结晶良好的ZnO薄膜，和导电性进一步增强敏化N-719染料在可见光照射下。在室温下，染料敏化的非晶ZnO传感器暴露于二氧化氮（NO2）的浓度范围从1.25至10 ppm的可见光照射下。传感器对1.25 ppm NO2的响应为143%，响应随NO2浓度线性增加。气体增感性能的提高归因于染料增感和光照条件下光生电子增强了NO2的化学吸附和脱附速率。此外，还详细讨论了湿度对基区电阻和传感器响应的影响。
A metal oxide gas sensor working at room temperature has been achieved by impregnating N-719 dye onto an as-sputtered amorphous zinc oxide (ZnO) film. The amorphous ZnO films exhibit a higher electrical conductivity when compared to well-crystallized ZnO films, and the conductivity is further enhanced by sensitization of N-719 dye under visible-light illumination. At room temperature, the dye sensitized amorphous ZnO sensors are exposed to nitrogen dioxide (NO2) at a concentration ranging from 1.25 to 10 ppm under visible-light illumination. The sensor response is 143% for 1.25 ppm NO2and the response increases linearly with the NO2concentration. The improvements of gas sensitization are attributed to the enhancement of NO2chemisorption and desorption rate by photogenerated electrons under dye sensitization and light illumination. In addition, the effect of humidity on base resistance and sensor response is discussed in detail.
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影响因子：
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作者：
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作者：
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