PMID- 30667445
OWN - NLM
STAT- PubMed-not-MEDLINE
DCOM- 20190131
LR  - 20190131
IS  - 2040-3372 (Electronic)
IS  - 2040-3364 (Linking)
VI  - 11
IP  - 5
DP  - 2019 Jan 31
TI  - Capillary-written single-crystalline all-inorganic perovskite microribbon arrays 
      for highly-sensitive and thermal-stable photodetectors.
PG  - 2453-2459
LID - 10.1039/c8nr08890j [doi]
AB  - In recent times, as a result of its exceptional resistance to moisture and heat, 
      cesium lead bromide (CsPbBr3) has been established as a potential 
      high-performance perovskite material for optoelectronics, which is inclusive of 
      photodetectors and photovoltaics. It has been demonstrated that a perovskite 
      single crystal has major benefits over its thin-film equivalents; nevertheless, 
      the preparation of perovskite crystal arrays for the utilisation of extensive 
      integration is a challenging task. In this paper, we consider a simple 
      crystallisation system, being a capillary-written system to enable the growth of 
      single crystal microribbon arrays (MRAs) directly from a precursor solution. It 
      is demonstrated by microstructure characterisation that CsPbBr3 MRAs are 
      good-quality single crystals with highly-aligned crystal packing and smooth 
      surfaces. The band-edge photoluminescence (PL) is exceptionally resilient and has 
      a lengthy PL life of  approximately 62 ns. An exceptional photo-response having a particularly 
      quick 99 mus response time and a 2496 A W-1 ultra-high responsivity is exhibited 
      by photodetectors which are built upon these MRAs. The fact that the 
      as-fabricated photodetectors maintain 90% of their commencing performance 
      following 100 days of constant stress testing under ambient conditions under an 
      illumination of 450 nm, showing exceptional operational stability, is noteworthy. 
      A significant step towards the large-area growth of high-quality perovskite MRAs 
      is presented by this work. This supplies favourable opportunities to build 
      high-performance optoelectronic and nanophotonic systems.
FAU - Zhao, Xiaoming
AU  - Zhao X
AD  - School of Physics and Astronomy, Queen Mary University of London, Mile End Road, 
      London E1 4NS, UK. xiaoming.zhao@qmul.ac.uk j.dennis@qmul.ac.uk.
FAU - Liu, Tianjun
AU  - Liu T
FAU - Shi, Wenda
AU  - Shi W
FAU - Hou, Xueyan
AU  - Hou X
FAU - Dennis, T John S
AU  - Dennis TJS
LA  - eng
PT  - Journal Article
PL  - England
TA  - Nanoscale
JT  - Nanoscale
JID - 101525249
EDAT- 2019/01/23 06:00
MHDA- 2019/01/23 06:01
CRDT- 2019/01/23 06:00
PHST- 2019/01/23 06:00 [pubmed]
PHST- 2019/01/23 06:01 [medline]
PHST- 2019/01/23 06:00 [entrez]
AID - 10.1039/c8nr08890j [doi]
PST - ppublish
SO  - Nanoscale. 2019 Jan 31;11(5):2453-2459. doi: 10.1039/c8nr08890j.