Abstract
Intensity-modulated photocurrent spectroscopy and intensitymodulated photovoltage spectroscopy are employed to measure the dynamics of electron transport and recombination in the ZnO nanowire (NW) array-ZnO/layered basic zinc acetate (LBZA) nanoparticle (NP) composite dye-sensitized solar cells (DSSCs). The roles of the vertical ZnO NWs and insulating LBZA in the electron collection and transport in DSSCs are investigated by comparing the results to those in the TiO2 - NP, horizontal TiO2 - NW and vertical ZnO-NW-array DSSCs. The electron trans-port rate and electron lifetime in the ZnO NW/NP composite DSSC are superior to those in the conventional TiO 2-NP cell due to the existence of the vertical ZnO NWs and insulating LBZA. It indicates that the ZnO NW/NP composite anode is able to sustain efficient electron collection over much greater thickness than the TiO 2-NP cell does. Consequently, a larger effective electron diffusion length is available in the ZnO composite DSSC.
| Original language | English |
|---|---|
| Pages (from-to) | 2698-2702 |
| Number of pages | 5 |
| Journal | ChemPhysChem |
| Volume | 10 |
| Issue number | 15 |
| DOIs | |
| Publication status | Published - 2009 Oct 19 |
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All Science Journal Classification (ASJC) codes
- Atomic and Molecular Physics, and Optics
- Physical and Theoretical Chemistry
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Enhancing electron collection efficiency and effective diffusion length in dye-sensitized solar cells. / Wong, Daniel Kwan Pang; Ku, Chen Hao; Chen, Yen Ru; Chen, Guan Ren; Wu, Jih Jen.
In: ChemPhysChem, Vol. 10, No. 15, 19.10.2009, p. 2698-2702.Research output: Contribution to journal › Article
TY - JOUR
T1 - Enhancing electron collection efficiency and effective diffusion length in dye-sensitized solar cells
AU - Wong, Daniel Kwan Pang
AU - Ku, Chen Hao
AU - Chen, Yen Ru
AU - Chen, Guan Ren
AU - Wu, Jih Jen
PY - 2009/10/19
Y1 - 2009/10/19
N2 - Intensity-modulated photocurrent spectroscopy and intensitymodulated photovoltage spectroscopy are employed to measure the dynamics of electron transport and recombination in the ZnO nanowire (NW) array-ZnO/layered basic zinc acetate (LBZA) nanoparticle (NP) composite dye-sensitized solar cells (DSSCs). The roles of the vertical ZnO NWs and insulating LBZA in the electron collection and transport in DSSCs are investigated by comparing the results to those in the TiO2 - NP, horizontal TiO2 - NW and vertical ZnO-NW-array DSSCs. The electron trans-port rate and electron lifetime in the ZnO NW/NP composite DSSC are superior to those in the conventional TiO 2-NP cell due to the existence of the vertical ZnO NWs and insulating LBZA. It indicates that the ZnO NW/NP composite anode is able to sustain efficient electron collection over much greater thickness than the TiO 2-NP cell does. Consequently, a larger effective electron diffusion length is available in the ZnO composite DSSC.
AB - Intensity-modulated photocurrent spectroscopy and intensitymodulated photovoltage spectroscopy are employed to measure the dynamics of electron transport and recombination in the ZnO nanowire (NW) array-ZnO/layered basic zinc acetate (LBZA) nanoparticle (NP) composite dye-sensitized solar cells (DSSCs). The roles of the vertical ZnO NWs and insulating LBZA in the electron collection and transport in DSSCs are investigated by comparing the results to those in the TiO2 - NP, horizontal TiO2 - NW and vertical ZnO-NW-array DSSCs. The electron trans-port rate and electron lifetime in the ZnO NW/NP composite DSSC are superior to those in the conventional TiO 2-NP cell due to the existence of the vertical ZnO NWs and insulating LBZA. It indicates that the ZnO NW/NP composite anode is able to sustain efficient electron collection over much greater thickness than the TiO 2-NP cell does. Consequently, a larger effective electron diffusion length is available in the ZnO composite DSSC.
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U2 - 10.1002/cphc.200900393
DO - 10.1002/cphc.200900393
M3 - Article
C2 - 19777522
AN - SCOPUS:70350132045
VL - 10
SP - 2698
EP - 2702
JO - ChemPhysChem
JF - ChemPhysChem
SN - 1439-4235
IS - 15
ER -