| Title: | Self-activated ultrahigh chemosensitivity of oxide thin film nanostructures for transparent sensors |
| Author(s): | Moon HG; Shim YS; Kim DH; Jeong HY; Jeong M; Jung JY; Han SM; Kim JK; Kim JS; Park HH; Lee JH; Tuller HL; Yoon SJ; Jang HW; |
| Address: | "Electronic Materials Research Center, Korea Institute of Science and Technology, Seoul 136-791, Republic of Korea" |
| ISSN/ISBN: | 2045-2322 (Electronic) 2045-2322 (Linking) |
| Abstract: | "One of the top design priorities for semiconductor chemical sensors is developing simple, low-cost, sensitive and reliable sensors to be built in handheld devices. However, the need to implement heating elements in sensor devices, and the resulting high power consumption, remains a major obstacle for the realization of miniaturized and integrated chemoresistive thin film sensors based on metal oxides. Here we demonstrate structurally simple but extremely efficient all oxide chemoresistive sensors with ~90% transmittance at visible wavelengths. Highly effective self-activation in anisotropically self-assembled nanocolumnar tungsten oxide thin films on glass substrate with indium-tin oxide electrodes enables ultrahigh response to nitrogen dioxide and volatile organic compounds with detection limits down to parts per trillion levels and power consumption less than 0.2 microwatts. Beyond the sensing performance, high transparency at visible wavelengths creates opportunities for their use in transparent electronic circuitry and optoelectronic devices with avenues for further functional convergence" |
| Keywords: | Electrochemical Techniques Equipment Design Nanostructures/*chemistry/ultrastructure Oxides/*chemistry Semiconductors; |
| Notes: | "MedlineMoon, Hi Gyu Shim, Young-Soek Kim, Do Hong Jeong, Hu Young Jeong, Myoungho Jung, Joo Young Han, Seung Min Kim, Jong Kyu Kim, Jin-Sang Park, Hyung-Ho Lee, Jong-Heun Tuller, Harry L Yoon, Seok-Jin Jang, Ho Won eng Research Support, Non-U.S. Gov't England 2012/08/21 Sci Rep. 2012; 2:588. doi: 10.1038/srep00588. Epub 2012 Aug 17" |
