TY - JOUR
T1 - Superior self-charged and -powered chemical sensing with high performance for NO2 detection at room temperature
AU - Chen, Hongjun
AU - Zhang, Meng
AU - Xing, Bobo
AU - Fu, Xiao
AU - Bo, Renheng
AU - Kumar Mulmudi, Hemant
AU - Huang, Shujuan
AU - Ho-Baillie, Anita W. Y.
AU - Catchpole, Kylie R.
AU - Tricoli, Antonio
PY - 2020/6/4
Y1 - 2020/6/4
N2 - Halide based lead perovskites are recently being explored as efficient light harvesters for optoelectronics devices. Here, some new insights on the self-charging and energy-storage of triple cation FA0.80MA0.15Cs0.05PbI2.55Br0.45 (FMCPIB) perovskites based devices with the application for self-powered chemical sensing are presented. It is demonstrated that under light irradiation a self-powered FMCPIB based device can detect particle per million (ppm) concentrations of nitrogen dioxide (NO2) with a swift response and recovery time of ≈17 and ≈126 s at room temperature, respectively. Most notably, the energy-storage feature enables FMCPIB based devices like a photo-capacitor, and then remain operational for another 1.7 h in darkness for the detection of NO2 without external power supply. Besides, the FMCPIB based devices can also be operated with a 1 V bias achieving a detection limit 0.2 ppm of NO2 at room temperature. Through analysis, it reveals that the high performance for NO2 can be ascribed to the special NO2-amine interaction with the cations of FMCPIB and the storage capacitance might be due to the accumulation of charges at the TiO2/FMCPIB/carbon interfaces under light irradiation. These appealing features of FMCPIB perovskites based chemical sensors might find potential applications in monitoring of toxic gas emission and public space safety.
AB - Halide based lead perovskites are recently being explored as efficient light harvesters for optoelectronics devices. Here, some new insights on the self-charging and energy-storage of triple cation FA0.80MA0.15Cs0.05PbI2.55Br0.45 (FMCPIB) perovskites based devices with the application for self-powered chemical sensing are presented. It is demonstrated that under light irradiation a self-powered FMCPIB based device can detect particle per million (ppm) concentrations of nitrogen dioxide (NO2) with a swift response and recovery time of ≈17 and ≈126 s at room temperature, respectively. Most notably, the energy-storage feature enables FMCPIB based devices like a photo-capacitor, and then remain operational for another 1.7 h in darkness for the detection of NO2 without external power supply. Besides, the FMCPIB based devices can also be operated with a 1 V bias achieving a detection limit 0.2 ppm of NO2 at room temperature. Through analysis, it reveals that the high performance for NO2 can be ascribed to the special NO2-amine interaction with the cations of FMCPIB and the storage capacitance might be due to the accumulation of charges at the TiO2/FMCPIB/carbon interfaces under light irradiation. These appealing features of FMCPIB perovskites based chemical sensors might find potential applications in monitoring of toxic gas emission and public space safety.
KW - chemical sensors
KW - NO₂ sensin
KW - perovskites
KW - self-charged
KW - self-powered
UR - http://www.scopus.com/inward/record.url?scp=85082494694&partnerID=8YFLogxK
UR - http://purl.org/au-research/grants/arc/DP150101939
UR - http://purl.org/au-research/grants/arc/DE160100569
UR - http://purl.org/au-research/grants/arc/DP160102955
U2 - 10.1002/adom.201901863
DO - 10.1002/adom.201901863
M3 - Article
SN - 2195-1071
VL - 8
SP - 1
EP - 8
JO - Advanced Optical Materials
JF - Advanced Optical Materials
IS - 11
M1 - 1901863
ER -