Limits...
Substantial Improvement of Short Wavelength Response in n-SiNW/PEDOT:PSS Solar Cell.

Ge Z, Xu L, Cao Y, Wu T, Song H, Ma Z, Xu J, Chen K - Nanoscale Res Lett (2015)

Bottom Line: We fabricated more isolated silicon nanowires with the diluted etching solution.And the J sc of the hybrid solar cell with more isolated nanowires has a significant enhancement, from 30.1 to 33.2 mA/cm(2).The remarkable EQE in the wavelength region of 300 and 600 nm was also obtained, which are in excess of 80 %.

View Article: PubMed Central - PubMed

Affiliation: School of Electronic Science and Engineering and Collaborative Innovation Center of Advanced Microstructures of National Laboratory of Solid State Microstructures, Nanjing University, Nanjing, 210093, People's Republic of China.

ABSTRACT
We report herein on the effects of silicon nanowire with different morphology on the device performance of n-SiNW/PEDOT:PSS hybrid solar cells. The power conversion efficiency (PCE) and external quantum efficiency (EQE) of the SiNW/PEDOT:PSS hybrid solar cells can be optimized by varying the length of the silicon nanowires. The optimal length of silicon nanowires is 0.23 μm, and the hybrid solar cell with the optimal length has the V oc of 569 mV, J sc of 30.1 mA/cm(2), and PCE of 9.3 %. We fabricated more isolated silicon nanowires with the diluted etching solution. And the J sc of the hybrid solar cell with more isolated nanowires has a significant enhancement, from 30.1 to 33.2 mA/cm(2). The remarkable EQE in the wavelength region of 300 and 600 nm was also obtained, which are in excess of 80 %. Our work provides a simple method to substantially improve the EQE of hybrid solar cell in the short wavelength region.

No MeSH data available.


a-d Cross-sectional view SEM images of the SiNW with wire length (L) of 0.10, 0.23, 0.52, and 0.80 μm. The inserts show the corresponding top view SEM images of these samples
© Copyright Policy - OpenAccess
Related In: Results  -  Collection

License
getmorefigures.php?uid=PMC4539312&req=5

Fig1: a-d Cross-sectional view SEM images of the SiNW with wire length (L) of 0.10, 0.23, 0.52, and 0.80 μm. The inserts show the corresponding top view SEM images of these samples

Mentions: To characterize the morphology of silicon nanowire arrays with different length of the SiNW arrays, top view and cross-sectional view scanning electron microscope (SEM) analysis was employed, as shown in Fig. 1. From Fig. 1, we can see that SiNW arrays are aligned vertically over the area up to the wafer size. The etching time was set to 1, 2, 5, and 8 min with the etchant consisting of 5 M HF acid and 0.02 M AgNO3, resulting in nanowire lengths of 0.10, 0.23, 0.52, and 0.80 μm, respectively.Fig. 1


Substantial Improvement of Short Wavelength Response in n-SiNW/PEDOT:PSS Solar Cell.

Ge Z, Xu L, Cao Y, Wu T, Song H, Ma Z, Xu J, Chen K - Nanoscale Res Lett (2015)

a-d Cross-sectional view SEM images of the SiNW with wire length (L) of 0.10, 0.23, 0.52, and 0.80 μm. The inserts show the corresponding top view SEM images of these samples
© Copyright Policy - OpenAccess
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4539312&req=5

Fig1: a-d Cross-sectional view SEM images of the SiNW with wire length (L) of 0.10, 0.23, 0.52, and 0.80 μm. The inserts show the corresponding top view SEM images of these samples
Mentions: To characterize the morphology of silicon nanowire arrays with different length of the SiNW arrays, top view and cross-sectional view scanning electron microscope (SEM) analysis was employed, as shown in Fig. 1. From Fig. 1, we can see that SiNW arrays are aligned vertically over the area up to the wafer size. The etching time was set to 1, 2, 5, and 8 min with the etchant consisting of 5 M HF acid and 0.02 M AgNO3, resulting in nanowire lengths of 0.10, 0.23, 0.52, and 0.80 μm, respectively.Fig. 1

Bottom Line: We fabricated more isolated silicon nanowires with the diluted etching solution.And the J sc of the hybrid solar cell with more isolated nanowires has a significant enhancement, from 30.1 to 33.2 mA/cm(2).The remarkable EQE in the wavelength region of 300 and 600 nm was also obtained, which are in excess of 80 %.

View Article: PubMed Central - PubMed

Affiliation: School of Electronic Science and Engineering and Collaborative Innovation Center of Advanced Microstructures of National Laboratory of Solid State Microstructures, Nanjing University, Nanjing, 210093, People's Republic of China.

ABSTRACT
We report herein on the effects of silicon nanowire with different morphology on the device performance of n-SiNW/PEDOT:PSS hybrid solar cells. The power conversion efficiency (PCE) and external quantum efficiency (EQE) of the SiNW/PEDOT:PSS hybrid solar cells can be optimized by varying the length of the silicon nanowires. The optimal length of silicon nanowires is 0.23 μm, and the hybrid solar cell with the optimal length has the V oc of 569 mV, J sc of 30.1 mA/cm(2), and PCE of 9.3 %. We fabricated more isolated silicon nanowires with the diluted etching solution. And the J sc of the hybrid solar cell with more isolated nanowires has a significant enhancement, from 30.1 to 33.2 mA/cm(2). The remarkable EQE in the wavelength region of 300 and 600 nm was also obtained, which are in excess of 80 %. Our work provides a simple method to substantially improve the EQE of hybrid solar cell in the short wavelength region.

No MeSH data available.