TY - JOUR
T1 - Solution-phase, template-free synthesis of PbI 2 and MAPbI 3 nano/microtubes for high-sensitivity photodetectors
AU - Chandrasekar, Perumal Veeramalai
AU - Yang, Shengyi
AU - Hu, Jinming
AU - Sulaman, Muhammad
AU - Shi, Yuansheng
AU - Saleem, Muhammad Imran
AU - Tang, Yi
AU - Jiang, Yurong
AU - Zou, Bingsuo
N1 - Publisher Copyright:
© The Royal Society of Chemistry.
PY - 2019/3/28
Y1 - 2019/3/28
N2 - Organic-inorganic hybrid perovskite materials with exotic semiconducting properties have become inevitable candidates for next-generation electronic devices. Very recently, a low dimensional nanostructure of the perovskite materials has attracted the scientific community due to its enhanced performance in optoelectronics as compared to its bulk counterparts. Herein, a facile method was developed for the scalable, room-temperature synthesis of CH 3 NH 3 PbI 3 (MAPbI 3 ) nano/microtubes by direct conversion of lead iodide (PbI 2 ) microtubes through a solution-phase method. At first, the PbI 2 microtubes were synthesized by the anti-solvent crystallization process and subsequently converted to CH 3 NH 3 PbI 3 nano/microtubes by the addition of CH 3 NH 3 I (MAI) precursor directly in the solution phase. The corresponding photodetectors (PDs) in the lateral metal-semiconductor-metal (MSM) configuration of the PbI 2 microtubes and MAPbI 3 nano/microtubes on glass substrates were investigated systematically. Compared to the PbI 2 based PDs (557 mA W -1 , 3.65 × 10 12 Jones, 0.251 s/0.252 s), the MAPbI 3 based PDs exhibit higher photoresponsivity, specific detectivity, and faster response time (25 A W -1 , 9.9 × 10 13 Jones, 49 ms/20 ms) under irradiation with 4.6 μW cm -2 intensity light of the 532 nm laser at a bias of 5 V. The proposed method is a low-temperature process, easy to apply in large scale synthesis, and finds potential applications in optoelectronic devices.
AB - Organic-inorganic hybrid perovskite materials with exotic semiconducting properties have become inevitable candidates for next-generation electronic devices. Very recently, a low dimensional nanostructure of the perovskite materials has attracted the scientific community due to its enhanced performance in optoelectronics as compared to its bulk counterparts. Herein, a facile method was developed for the scalable, room-temperature synthesis of CH 3 NH 3 PbI 3 (MAPbI 3 ) nano/microtubes by direct conversion of lead iodide (PbI 2 ) microtubes through a solution-phase method. At first, the PbI 2 microtubes were synthesized by the anti-solvent crystallization process and subsequently converted to CH 3 NH 3 PbI 3 nano/microtubes by the addition of CH 3 NH 3 I (MAI) precursor directly in the solution phase. The corresponding photodetectors (PDs) in the lateral metal-semiconductor-metal (MSM) configuration of the PbI 2 microtubes and MAPbI 3 nano/microtubes on glass substrates were investigated systematically. Compared to the PbI 2 based PDs (557 mA W -1 , 3.65 × 10 12 Jones, 0.251 s/0.252 s), the MAPbI 3 based PDs exhibit higher photoresponsivity, specific detectivity, and faster response time (25 A W -1 , 9.9 × 10 13 Jones, 49 ms/20 ms) under irradiation with 4.6 μW cm -2 intensity light of the 532 nm laser at a bias of 5 V. The proposed method is a low-temperature process, easy to apply in large scale synthesis, and finds potential applications in optoelectronic devices.
UR - http://www.scopus.com/inward/record.url?scp=85063538371&partnerID=8YFLogxK
U2 - 10.1039/c9nr00452a
DO - 10.1039/c9nr00452a
M3 - Article
C2 - 30855064
AN - SCOPUS:85063538371
SN - 2040-3364
VL - 11
SP - 5188
EP - 5196
JO - Nanoscale
JF - Nanoscale
IS - 12
ER -