Interface Engineering in Solution-Processed Nanocrystal Thin Films for Improved Thermoelectric Performance

被引：47

作者：

Ding, Defang ^{[1
]}

Wang, Dawei ^{[1
]}

Zhao, Man ^{[1
]}

Lv, Jiawei ^{[1
]}

Jiang, Hong ^{[2
]}

Lu, Chenguang ^{[1
,3
]}

Tang, Zhiyong ^{[1
,3
]}

机构：

[1] Natl Ctr Nanosci & Technol, CAS Key Lab Nanosyst & Hierarch Fabricat, CAS Ctr Excellence Nanosci, 11 Beiyitiao, Beijing 100190, Peoples R China

[2] Peking Univ, Beijing Natl Lab Mol Sci, State Key Lab Rare Earth Mat Chem & Applicat, Coll Chem & Mol Engn, 2 Beiertiao, Beijing 100871, Peoples R China

[3] Univ Chinese Acad Sci, 19 A Yuquan Rd, Beijing 100049, Peoples R China

来源：

ADVANCED MATERIALS | 2017年 / 29卷 / 01期

基金：

中国国家自然科学基金;

关键词：

QUANTUM-DOT FILMS; PBS NANOCRYSTALS; PBTE; DEVICES; SUPERLATTICES; NANOPARTICLES; DISPLACEMENT; EFFICIENCY; CONVERSION; NANOWIRES;

D O I：

10.1002/adma.201603444

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Solution-processed PbTe nanocrystal (NC) thin films are ligand exchanged by ethylenediamine and then annealed at 400 degrees C for enhancement of NC coupling. To further improve the performance, heterostructures are introduced into the PbTe/PbS films. Significantly, an optimized ZT of approximate to 0.30 is successfully achieved at 405 K. This method opens an avenue toward thermoelectric thin film devices with high performance.

引用

页数：7

共 31 条

[1] Ligand Exchange and the Stoichiometry of Metal Chalcogenide Nanocrystals: Spectroscopic Observation of Facile Metal-Carboxylate Displacement and Binding [J].

Anderson, Nicholas C. ;

Hendricks, Mark P. ;

Choi, Joshua J. ;

Owen, Jonathan S. .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2013, 135 (49) :18536-18548

[2] High-performance bulk thermoelectrics with all-scale hierarchical architectures [J].

Biswas, Kanishka ;

He, Jiaqing ;

Blum, Ivan D. ;

Wu, Chun-I ;

Hogan, Timothy P. ;

Seidman, David N. ;

Dravid, Vinayak P. ;

Kanatzidis, Mercouri G. .

NATURE, 2012, 489 (7416) :414-418

[3] Aspects of thin-film superlattice thermoelectric materials, devices, and applications [J].

Böttner, H ;

Chen, G ;

Venkatasubramanian, R .

MRS BULLETIN, 2006, 31 (03) :211-217

[4] Record Charge Carrier Diffusion Length in Colloidal Quantum Dot Solids via Mutual Dot-To-Dot Surface Passivation [J].

Carey, Graham H. ;

Levina, Larissa ;

Comin, Riccardo ;

Voznyy, Oleksandr ;

Sargent, Edward H. .

ADVANCED MATERIALS, 2015, 27 (21) :3325-3330

[5] New directions for low-dimensional thermoelectric materials [J].

Dresselhaus, Mildred S. ;

Chen, Gang ;

Tang, Ming Y. ;

Yang, Ronggui ;

Lee, Hohyun ;

Wang, Dezhi ;

Ren, Zhifeng ;

Fleurial, Jean-Pierre ;

Gogna, Pawan .

ADVANCED MATERIALS, 2007, 19 (08) :1043-1053

[6] Thiocyanate-Capped Nanocrystal Colloids: Vibrational Reporter of Surface Chemistry and Solution-Based Route to Enhanced Coupling in Nanocrystal Solids [J].

Fafarman, Aaron T. ;

Koh, Weon-kyu ;

Diroll, Benjamin T. ;

Kim, David K. ;

Ko, Dong-Kyun ;

Oh, Soong Ju ;

Ye, Xingchen ;

Doan-Nguyen, Vicky ;

Crump, Michael R. ;

Reifsnyder, Danielle C. ;

Murray, Christopher B. ;

Kagan, Cherie R. .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2011, 133 (39) :15753-15761

[7] Thermoelectric Properties of Silver Telluride-Bismuth Telluride Nanowire Heterostructure Synthesized by Site-Selective Conversion [J].

Fang, Haiyu ;

Yang, Haoran ;

Wu, Yue .

CHEMISTRY OF MATERIALS, 2014, 26 (10) :3322-3327

[8] The Effects of the Size and the Doping Concentration on the Power Factor of n-type Lead Telluride Nanocrystals for Thermoelectric Energy Conversion [J].

Fang, Haiyu ;

Luo, Zhiqiang ;

Yang, Haoran ;

Wu, Yue .

NANO LETTERS, 2014, 14 (03) :1153-1157

[9] Structure and Thermoelectric Properties of Spark Plasma Sintered Ultrathin PbTe Nanowires [J].

Finefrock, Scott W. ;

Zhang, Genqiang ;

Bahk, Je-Hyeong ;

Fang, Haiyu ;

Yang, Haoran ;

Shakouri, Ali ;

Wu, Yue .

NANO LETTERS, 2014, 14 (06) :3466-3473

[10] Quantum dot superlattice thermoelectric materials and devices [J].

Harman, TC ;

Taylor, PJ ;

Walsh, MP ;

LaForge, BE .

SCIENCE, 2002, 297 (5590) :2229-2232

← 1 2 3 4 →