PbICl precursor solutions for all solid-state PbS quantum-dot sensitized TiO2 nanorod array solar cells using successive ionic layer adsorption and reaction method

다국어 초록 (Multilingual Abstract)

In this work, PbICl precursor solution in N,N-dimethylformamide was successfully applied to deposit PbS quantum-dots on TiO2 nanorod arrays by successive ionic layer adsorption and reaction method (SILAR). The influence of PbI2, PbBr2, PbICl precursor solution on the morphology, crystal size and optical absorption of PbS quantum-dots was investigated and the photovoltaic performance of the corresponding solid-state PbS quantumdot sensitized TiO2 nanorod array solar cells with spiro-OMeTAD was evaluated. The average crystal sizes of PbS quantum-dots were 9.0 nm of PbI2, 8.6 nm of PbBr2 and 8.4 nm of PbICl and the photoelectric conversion efficiency of the corresponding solar cells achieved 2.63%, 3.00%, 3.45%. The result revealed that PbICl precursor solution was superior to PbBr2 and PbI2.

참고문헌 (Reference)

1 Sung Woo Jung, "Two-step annealed CdS/CdSe co-sensitizers for quantum dot-sensitized solar cells" 한국물리학회 13 (13): 1532-1536, 2013

2 S. Jiao, "Surface engineering of PbS quantum dot sensitized solar cells with a conversion efficiency exceeding 7%" 4 : 7214-7221, 2016

3 S.A. Mcdonald, "Solution-processed PbS quantum dot infrared photodetectors and photovoltaics" 4 : 138-142, 2005

4 G. Xiao, "Short-length and high-density $TiO_2$ nanorod arrays for the efficient charge separation interface in perovskite solar cells" 249 : 169-173, 2017

5 X. Li, "Pre-synthesized monodisperse PbS quantum dots sensitized solar cells" 114 : 71-75, 2014

6 N. Wu, "PbICl: a new precursor solution for efficient planar perovskite solar cell by vapor-assisted solution process" 357 : 2372-2377, 2015

7 A.N. Jumabekov, "Passivation of PbS quantum dot surface with l-glutathione in solid-state quantum-dot-sensitized solar cells" 8 : 4600-4607, 2016

8 D.H. Yeon, "Origin of the enhanced photovoltaic characteristics of PbS thin film solar cells processed at near room temperature" 2 : 20112-20117, 2014

9 S.H. Im, "Improved air stability of PbS-sensitized solar cell by incorporating ethanedithiol during spin-assisted successive ionic layer adsorption and reaction" 13 : 2352-2357, 2012

10 J.H. Heo, "Formation of uniform PbS quantum dots by a spin-assisted successive precipitation and anion exchange reaction process using $PbX_2$ (X = Br, I) and $Na_2S$ precursors" 7 : 3072-3077, 2017

11 J. Tian, "Enhanced performance of PbS quantum-dot-sensitized solar cells via optimizing precursor solution and electrolytes" 6 : 23094-, 2016

12 K.C. Preetha, "Effect of cationic precursor pH on optical and transport properties of SILAR deposited nano crystalline PbS thin films" 한국물리학회 12 (12): 53-59, 2012

13 Z. Zhang, "Combination of short-length $TiO_2$ nanorod arrays and compact PbS quantum-dot thin films for efficient solid-state quantum-dot-sensitized solar cells" 410 : 8-13, 2017

14 K.J. Karki, "Coherent two-dimensional photocurrent spectroscopy in a PbS quantum dot photocell" 5 : 5869-, 2014

15 J. Jiao, "CdS and PbS quantum dots co-sensitized $TiO_2$ nanorod arrays with improved performance for solar cells application" 16 : 435-440, 2013

16 S.H. Im, "All solid state multiply layered PbS colloidal quantum-dot-sensitized photovoltaic cells" 4 : 4181-4186, 2011