PMID- 31532194
OWN - NLM
STAT- PubMed-not-MEDLINE
DCOM- 20191016
LR  - 20191016
IS  - 1944-8252 (Electronic)
IS  - 1944-8244 (Linking)
VI  - 11
IP  - 40
DP  - 2019 Oct 9
TI  - Device Characteristics of Band gap Tailored 10.04% Efficient CZTSSe Solar Cells 
      Sprayed from Water-Based Solution.
PG  - 36735-36741
LID - 10.1021/acsami.9b12565 [doi]
AB  - A diverse S/(S + Se) ratio of Cu(2)ZnSn(S(x),Se(1-x))(4) (CZTSSe) thin-film solar 
      cells is derived by the water-based spray pyrolysis approach. By fine-tuning the 
      S/(S + Se) ratio, base CZTSSe device efficiency has significantly improved from 
      7.02 to 10.04% by minimizing the V(oc) deficit up to 616 mV and increasing fill 
      factor (FF) from 56.42 to 62.38%. As the S/(S + Se) ratio was increased from 0 to 
      0.4, surface compactness was observed to be improved with slightly decreased 
      grain size, which increased shunt resistance and resultantly increased FF. 
      However, when S-alloying was more than S/(S + Se) = 0.4, grain size decreased too 
      much and had a detrimental effect on device performance. To deeply understand the 
      role effect of the S/(S + Se) ratio, detailed spectroscopic analysis is performed 
      with admittance spectroscopy, temperature-dependent current-voltage 
      characteristic (J-V-T), time-resolved photoluminescence, and Raman depth 
      profiling. Experimental results revealed that the different power conversion 
      efficiency limiting factors were developed with various S/(S + Se) ratios. High 
      density of deep defect states generated with the S/(S + Se) >/= 40% content and 
      larger conduction band offset observed with red kink were formed in the Se/(S + 
      Se) >/= 80% content. Hence, in order to get the high-efficient CZTSSe solar cell, 
      fine tuning of the S/(S + Se) ratio is necessary.
FAU - Enkhbat, Temujin
AU  - Enkhbat T
AD  - Department of Physics , Incheon National University , 119 Academy-ro , Yeonsu-gu, 
      Incheon 22012 , Republic of Korea.
FAU - Kim, SeongYeon
AU  - Kim S
AD  - Department of Physics , Incheon National University , 119 Academy-ro , Yeonsu-gu, 
      Incheon 22012 , Republic of Korea.
FAU - Kim, JunHo
AU  - Kim J
AUID- ORCID: 0000-0002-2204-7163
AD  - Department of Physics , Incheon National University , 119 Academy-ro , Yeonsu-gu, 
      Incheon 22012 , Republic of Korea.
LA  - eng
PT  - Journal Article
DEP - 20190926
PL  - United States
TA  - ACS Appl Mater Interfaces
JT  - ACS applied materials & interfaces
JID - 101504991
SB  - IM
OTO - NOTNLM
OT  - CZTSSe thin films
OT  - aqueous solution
OT  - chalcogen ratio
OT  - defect characterization
OT  - photovoltaic properties
OT  - spray deposition
EDAT- 2019/09/19 06:00
MHDA- 2019/09/19 06:01
CRDT- 2019/09/19 06:00
PHST- 2019/09/19 06:00 [pubmed]
PHST- 2019/09/19 06:01 [medline]
PHST- 2019/09/19 06:00 [entrez]
AID - 10.1021/acsami.9b12565 [doi]
PST - ppublish
SO  - ACS Appl Mater Interfaces. 2019 Oct 9;11(40):36735-36741. doi: 
      10.1021/acsami.9b12565. Epub 2019 Sep 26.