PMID- 27934172
OWN - NLM
STAT- PubMed-not-MEDLINE
DCOM- 20180718
LR  - 20180718
IS  - 1944-8252 (Electronic)
IS  - 1944-8244 (Linking)
VI  - 8
IP  - 48
DP  - 2016 Dec 7
TI  - Crystal Engineering for Low Defect Density and High Efficiency Hybrid Chemical 
      Vapor Deposition Grown Perovskite Solar Cells.
PG  - 32805-32814
AB  - Synthesis of high quality perovskite absorber is a key factor in determining the 
      performance of the solar cells. We demonstrate that hybrid chemical vapor 
      deposition (HCVD) growth technique can provide high level of versatility and 
      repeatability to ensure the optimal conditions for the growth of the perovskite 
      films as well as potential for batch processing. It is found that the growth 
      ambient and degree of crystallization of CH(3)NH(3)PbI(3) (MAPI) have strong 
      impact on the defect density of MAPI. We demonstrate that HCVD process with slow 
      postdeposition cooling rate can significantly reduce the density of shallow and 
      deep traps in the MAPI due to enhanced material crystallization, while a mixed 
      O(2)/N(2) carrier gas is effective in passivating both shallow and deep traps. By 
      careful control of the perovskite growth process, a champion device with power 
      conversion efficiency of 17.6% is achieved. Our work complements the existing 
      theoretical studies on different types of trap states in MAPI and fills the gap 
      on the theoretical analysis of the interaction between deep levels and oxygen. 
      The experimental results are consistent with the theoretical predictions.
FAU - Ng, Annie
AU  - Ng A
AD  - Department of Electronic and Information Engineering, The Hong Kong Polytechnic 
      University , Hong Kong, P.R. China.
FAU - Ren, Zhiwei
AU  - Ren Z
AD  - Department of Electronic and Information Engineering, The Hong Kong Polytechnic 
      University , Hong Kong, P.R. China.
FAU - Shen, Qian
AU  - Shen Q
AD  - Department of Electronic and Information Engineering, The Hong Kong Polytechnic 
      University , Hong Kong, P.R. China.
FAU - Cheung, Sin Hang
AU  - Cheung SH
AD  - Department of Physics, Hong Kong Baptist University , Hong Kong, P.R. China.
FAU - Gokkaya, Huseyin Cem
AU  - Gokkaya HC
AD  - Department of Electronic and Information Engineering, The Hong Kong Polytechnic 
      University , Hong Kong, P.R. China.
FAU - So, Shu Kong
AU  - So SK
AD  - Department of Physics, Hong Kong Baptist University , Hong Kong, P.R. China.
FAU - Djurisic, Aleksandra B
AU  - Djurisic AB
AD  - Department of Physics, University of Hong Kong , Hong Kong, P.R. China.
FAU - Wan, Yangyang
AU  - Wan Y
AD  - Hefei National Laboratory of Physical Sciences at the Microscale, Synergetic 
      Innovation Center of Quantum Information and Quantum Physics, CAS Key Laboratory 
      of Materials for Energy Conversion, and Department of Materials Science and 
      Engineering, University of Science and Technology of China , Hefei, Anhui 230000, 
      P.R. China.
FAU - Wu, Xiaojun
AU  - Wu X
AD  - Hefei National Laboratory of Physical Sciences at the Microscale, Synergetic 
      Innovation Center of Quantum Information and Quantum Physics, CAS Key Laboratory 
      of Materials for Energy Conversion, and Department of Materials Science and 
      Engineering, University of Science and Technology of China , Hefei, Anhui 230000, 
      P.R. China.
FAU - Surya, Charles
AU  - Surya C
AD  - Department of Electronic and Information Engineering, The Hong Kong Polytechnic 
      University , Hong Kong, P.R. China.
LA  - eng
PT  - Journal Article
DEP - 20161121
PL  - United States
TA  - ACS Appl Mater Interfaces
JT  - ACS applied materials & interfaces
JID - 101504991
OTO - NOTNLM
OT  - cooling rates
OT  - crystallization
OT  - defects
OT  - growth ambient
OT  - hybrid chemical vapor deposition
OT  - passivation
OT  - perovskites
OT  - solar cells
EDAT- 2016/12/10 06:00
MHDA- 2016/12/10 06:01
CRDT- 2016/12/10 06:00
PHST- 2016/12/10 06:00 [entrez]
PHST- 2016/12/10 06:00 [pubmed]
PHST- 2016/12/10 06:01 [medline]
AID - 10.1021/acsami.6b07513 [doi]
PST - ppublish
SO  - ACS Appl Mater Interfaces. 2016 Dec 7;8(48):32805-32814. doi: 
      10.1021/acsami.6b07513. Epub 2016 Nov 21.