The Photothermal Stability of PbS Quantum Dot Solids

被引：133
作者：
Ihly, Rachelle [1 ]
Tolentino, Jason [1 ]
Liu, Yao [1 ]
Gibbs, Markelle [1 ]
Law, Matt [1 ]
机构：
[1] Univ Calif Irvine, Dept Chem, Irvine, CA 92697 USA
来源：
ACS NANO | 2011年 / 5卷 / 10期
关键词：
quantum dots; nanocrystals; PbS; photothermal stability; solar cells; ATOMIC LAYER DEPOSITION; LOW-TEMPERATURE; SOLAR-CELLS; ELECTRICAL-PROPERTIES; N-TYPE; NANOCRYSTAL SOLIDS; METAL-OXIDE; FILMS; ELECTROLUMINESCENCE; AIR;
D O I：
10.1021/nn2033117
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
We combine optical absorption spectroscopy, ex situ transmission electron microscopy (TEM) Imaging, and variable-temperature measurements to study the effect of ultraviolet (UV) light and heat treatments on ethanedithiol-treated PbS quantum dot (QD) films as a function of ambient atmosphere, temperature, and QD size. Film aging occurs mainly by oxidation or ripening and sintering depending on QD size and the presence of oxygen. We can stop QD oxidation and greatly suppress ripening by infilling the films with amorphous Al2O3 using room-temperature atomic layer deposition (ALD).
引用
收藏
页码：8175 / 8186
页数：12
相关论文
共 65 条
[1]   Electroluminescence in thin solid films of closely packed CdS nanocrystals [J].
Artemyev, MV ;
Sperling, V ;
Woggon, U .
JOURNAL OF APPLIED PHYSICS, 1997, 81 (10) :6975-6977
[2]   Fabrication and characterization of red-emitting electroluminescent devices based on thiol-stabilized semiconductor nanocrystals [J].
Bertoni, Cristina ;
Gallardo, Diego ;
Dunn, Steve ;
Gaponik, Nikolai ;
Eychmueller, Alexander .
APPLIED PHYSICS LETTERS, 2007, 90 (03)
[3]   PbSe Nanocrystal Excitonic Solar Cells [J].
Choi, Joshua J. ;
Lim, Yee-Fun ;
Santiago-Berrios, Mitk'El B. ;
Oh, Matthew ;
Hyun, Byung-Ryool ;
Sung, Liangfeng ;
Bartnik, Adam C. ;
Goedhart, Augusta ;
Malliaras, George G. ;
Abruna, Hector D. ;
Wise, Frank W. ;
Hanrath, Tobias .
NANO LETTERS, 2009, 9 (11) :3749-3755
[4]   Electroluminescence from single monolayers of nanocrystals in molecular organic devices [J].
Coe, S ;
Woo, WK ;
Bawendi, M ;
Bulovic, V .
NATURE, 2002, 420 (6917) :800-803
[5]  
COLVIN VL, 1994, NATURE, V370, P354, DOI 10.1038/370354a0
[6]   Ligand Effects on Synthesis and Post-Synthetic Stability of PbSe Nanocrystals [J].
Dai, Quanqin ;
Zhang, Yu ;
Wang, Yingnan ;
Wang, Yiding ;
Zou, Bo ;
Yu, William W. ;
Hu, Michael Z. .
JOURNAL OF PHYSICAL CHEMISTRY C, 2010, 114 (39) :16160-16167
[7]   Stability Study of PbSe Semiconductor Nanocrystals over Concentration, Size, Atmosphere, and Light Exposure [J].
Dai, Quanqin ;
Wang, Yingnan ;
Zhang, Yu ;
Li, Xinbi ;
Li, Ruowang ;
Zou, Bo ;
Seo, JaeTae ;
Wang, Yiding ;
Liu, Manhong ;
Yu, William W. .
LANGMUIR, 2009, 25 (20) :12320-12324
[8]   Ambient-Processed Colloidal Quantum Dot Solar Cells via Individual Pre-Encapsulation of Nanoparticles [J].
Debnath, Ratan ;
Tang, Jiang ;
Barkhouse, D. Aaron ;
Wang, Xihua ;
Pattantyus-Abraham, Andras G. ;
Brzozowski, Lukasz ;
Levina, Larissa ;
Sargent, Edward H. .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2010, 132 (17) :5952-+
[9]   n-Type Transition Metal Oxide as a Hole Extraction Layer in PbS Quantum Dot Solar Cells [J].
Gao, Jianbo ;
Perkins, Craig L. ;
Luther, Joseph M. ;
Hanna, Mark C. ;
Chen, Hsiang-Yu ;
Semonin, Octavi E. ;
Nozik, Arthur J. ;
Ellingson, Randy J. ;
Beard, Matthew C. .
NANO LETTERS, 2011, 11 (08) :3263-3266
[10]   Quantum Dot Size Dependent J-V Characteristics in Heterojunction ZnO/PbS Quantum Dot Solar Cells [J].
Gao, Jianbo ;
Luther, Joseph M. ;
Semonin, Octavi E. ;
Ellingson, Randy J. ;
Nozik, Arthur J. ;
Beard, Matthew C. .
NANO LETTERS, 2011, 11 (03) :1002-1008
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