Efficient CdSe Quantum Dot-Sensitized Solar Cells Prepared by an Improved Successive Ionic Layer Adsorption and Reaction Process

Nano Letters ◽  
2009 ◽  
Vol 9 (12) ◽  
pp. 4221-4227 ◽  
Author(s):  
HyoJoong Lee ◽  
Mingkui Wang ◽  
Peter Chen ◽  
Daniel R. Gamelin ◽  
Shaik M. Zakeeruddin ◽  
...  
Keyword(s):  
Solar Cells ◽  
Quantum Dot ◽  
Reaction Process ◽  
Layer Adsorption ◽  
Cdse Quantum Dot ◽  
Sensitized Solar Cells ◽  
Ionic Layer

scholarly journals Fabrication, Characterization, and Optimization of CdS and CdSe Quantum Dot-Sensitized Solar Cells with Quantum Dots Prepared by Successive Ionic Layer Adsorption and Reaction

2014 ◽  
Vol 2014 ◽  
pp. 1-14 ◽  
Author(s):  
H. K. Jun ◽  
M. A. Careem ◽  
A. K. Arof
Keyword(s):  
Quantum Dots ◽  
Solar Cells ◽  
Quantum Dot ◽  
Solar Cell Performance ◽  
Optimum Performance ◽  
Layer Adsorption ◽  
Cdse Quantum Dot ◽  
Sensitized Solar Cells ◽  
Ionic Layer ◽  
Dipping Time

CdS and CdSe quantum dot-sensitized solar cells (QDSSCs) were used for the study of determining the optimum preparation parameters that could yield the best solar cell performance. The quantum dots (QDs) were coated on the surface of mesoporous TiO2layer deposited on FTO substrate using the successive ionic layer adsorption and reaction (SILAR) method. In this method the QDs are allowed to grow on TiO2by dipping the TiO2electrode successively in two different solutions for predetermined times. This method allows the fabrication of QDs in a facile way. Three preparation parameters that control the QD fabrication were investigated: concentration of precursor solutions, number of dipping cycles (SILAR cycles), and dipping time in each solution. CdS based QDSSC showed optimum performance when the QDs were prepared from precursor solutions having the concentration of 0.10 M using 4 dipping cycles with the dipping time of 5 minutes in each solution. For CdSe QDSSC, the optimum performance was achieved with QDs prepared from 0.03 M precursor solutions using 7 dipping cycles with 30 s dipping time in each solution. The QDs deposited on TiO2surface were characterized using UV-vis absorption spectroscopy, FESEM, and TEM imaging.

scholarly journals Influence of deposition strategies on CdSe quantum dot-sensitized solar cells: a comparison between successive ionic layer adsorption and reaction and chemical bath deposition

2015 ◽  
Vol 3 (23) ◽  
pp. 12539-12549 ◽  
Author(s):  
Ru Zhou ◽  
Haihong Niu ◽  
Qifeng Zhang ◽  
Evan Uchaker ◽  
Zhiqiang Guo ◽  
...  
Keyword(s):  
Solar Cells ◽  
Quantum Dot ◽  
Chemical Bath Deposition ◽  
Layer Adsorption ◽  
Cdse Quantum Dot ◽  
Sensitized Solar Cells ◽  
Ionic Layer

Appreciable influences of deposition strategies on the assembly of QDs and the performance of the resultant QDSCs were highlighted.

scholarly journals Performance Study of CdS/Co-Doped-CdSe Quantum Dot Sensitized Solar Cells

2014 ◽  
Vol 2014 ◽  
pp. 1-6 ◽  
Author(s):  
Xiaoping Zou ◽  
Sheng He ◽  
Gongqing Teng ◽  
Chuan Zhao
Keyword(s):  
Solar Cells ◽  
Quantum Dot ◽  
Performance Study ◽  
Co Doping ◽  
Transfer Path ◽  
Layer Adsorption ◽  
Cdse Quantum Dot ◽  
Cascade Energy ◽  
Sensitized Solar Cells ◽  
Co Doped

In order to optimize the charge transfer path in quantum dot sensitized solar cells (QDSCs), we employed successive ionic layer adsorption and reaction method to dope CdSe with Co for fabricating CdS/Co-doped-CdSe QDSCs constructed with CdS/Co-doped-CdSe deposited on mesoscopic TiO2film as photoanode, Pt counter electrode, and sulfide/polysulfide electrolyte. After Co doping, the bandgap of CdSe quantum dot decreases, and the conduction band and valence band all improve, forming a cascade energy level which is more conducive to charge transport inside the solar cell and reducing the recombination of electron-hole thus improving the photocurrent and ultimately improving the power conversion efficiency. This work has not been found in the literature.

Study on characteristics of CdS quantum dot-sensitized solar cells prepared by successive ionic layer adsorption and reaction with different adsorption times

2014 ◽  
Vol 10 (3) ◽  
pp. 621-626 ◽  
Author(s):  
Myeong-Soo Jeong ◽  
Min-Kyu Son ◽  
Soo-Kyoung Kim ◽  
Songyi Park ◽  
Kandasamy Prabakar ◽  
...  
Keyword(s):  
Solar Cells ◽  
Quantum Dot ◽  
Layer Adsorption ◽  
Cds Quantum Dot ◽  
Sensitized Solar Cells ◽  
Ionic Layer
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