TY - JOUR
T1 - From binary to multicomponent photoactive layer
T2 - A promising complementary strategy to efficient hybrid solar cells
AU - Liu, Changwen
AU - Qiu, Zeliang
AU - Li, Feng
AU - Meng, Weili
AU - Yue, Wenjin
AU - Zhang, Fapei
AU - Qiao, Qiquan
AU - Wang, Mingtai
N1 - Funding Information:
This work was supported by the “100-Talent Program” of Chinese Academy of Sciences , the National Natural Science Foundation of China ( 11274307 , 11074256 , 91333121 and 51202002 ), the Natural Science Foundation of Anhui Province ( 1308085ME70 ), and the President Foundation of Hefei Institute of Physical Sciences . Qiao acknowledges the support from NASA EPSCoR ( NNX13AD31A ), NSF CAREER ( ECCS-0950731 ), NSF EPSCoR (Grant no. 0903804 ), and SD BoR CRGP .
Publisher Copyright:
© 2014 Elsevier Ltd.
PY - 2015/3/1
Y1 - 2015/3/1
N2 - A strategy is demonstrated for fabrication of highly efficient hybrid solar cells based on the polymer/nanoarrays with complementary multicomponents in photoactive layer, including a scenario to controllably synthesize ternary ZnO/CdS/Sb2S3-core/shell/shell nanoarrays (ZCS-NAs) for a high open-circuit voltage (Voc) and short-circuit current and an approach to dope amorphous polymer with lithium bis(trifluoromethanesulfonyl) amide at nanoscale for a remarkably improved fill factor. With the integrated benefits from the complementary multicomponents having optimized nanoarray structure and doping concentration, an efficiency up to 5.01% under AM 1.5 illumination (100mW/cm2) is achieved in the polymer/ZCS-NA devices with poly(2-methoxy-5-(2-ethylhexyloxy)-1,4-phenylenevinylene) as the polymer. To the best of our knowledge, this is the highest efficiency in the polymer/nanoarray devices. It is found that the Voc in the multicomponent solar cells is determined by the band level difference between ZnO core and polymer, and sufficient photo-excitation of the polymer is necessary for efficient photocurrent generation. The component effects on device performance are elucidated and a model concerning the effective polymer phase and illumination attenuation between nanorods is proposed for understanding the charge generation from polymer absorption in the multicomponent solar cells.
AB - A strategy is demonstrated for fabrication of highly efficient hybrid solar cells based on the polymer/nanoarrays with complementary multicomponents in photoactive layer, including a scenario to controllably synthesize ternary ZnO/CdS/Sb2S3-core/shell/shell nanoarrays (ZCS-NAs) for a high open-circuit voltage (Voc) and short-circuit current and an approach to dope amorphous polymer with lithium bis(trifluoromethanesulfonyl) amide at nanoscale for a remarkably improved fill factor. With the integrated benefits from the complementary multicomponents having optimized nanoarray structure and doping concentration, an efficiency up to 5.01% under AM 1.5 illumination (100mW/cm2) is achieved in the polymer/ZCS-NA devices with poly(2-methoxy-5-(2-ethylhexyloxy)-1,4-phenylenevinylene) as the polymer. To the best of our knowledge, this is the highest efficiency in the polymer/nanoarray devices. It is found that the Voc in the multicomponent solar cells is determined by the band level difference between ZnO core and polymer, and sufficient photo-excitation of the polymer is necessary for efficient photocurrent generation. The component effects on device performance are elucidated and a model concerning the effective polymer phase and illumination attenuation between nanorods is proposed for understanding the charge generation from polymer absorption in the multicomponent solar cells.
KW - Conjugated polymer
KW - Interfacial modification
KW - Solar cells
KW - ZnO nanorod array
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U2 - 10.1016/j.nanoen.2014.09.028
DO - 10.1016/j.nanoen.2014.09.028
M3 - Article
AN - SCOPUS:84922628252
SN - 2211-2855
VL - 12
SP - 686
EP - 697
JO - Nano Energy
JF - Nano Energy
ER -