Identifying and Reducing Interfacial Losses to Enhance Color-Pure Electroluminescence in Blue-Emitting Perovskite Nanoplatelet Light-Emitting Diodes

被引:123
作者
Hoye, Robert L. Z. [1 ,2 ]
Lai, May-Ling [2 ]
Anaya, Miguel [2 ]
Tong, Yu [3 ,4 ,5 ]
Galkowski, Krzysztof [2 ,7 ]
Doherty, Tiarnan [2 ]
Li, Weiwei [1 ]
Huq, Tahmida N. [1 ]
Mackowski, Sebastian [7 ]
Polavarapu, Lakshminarayana [3 ,4 ,5 ]
Feldmann, Jochen [3 ,4 ,5 ]
MacManus-Driscoll, Judith L. [1 ]
Friend, Richard H. [2 ]
Urban, Alexander S. [4 ,5 ,6 ]
Stranks, Samuel D. [2 ]
机构
[1] Univ Cambridge, Dept Mat Sci & Met, 27 Charles Babbage Rd, Cambridge CB3 0FS, England
[2] Univ Cambridge, Cavendish Lab, JJ Thomson Ave, Cambridge CB3 OHE, England
[3] Ludwig Mmdmilians Univ Munchen, Dept Phys, Nanoinst Munich, Chair Photon & Optoelect, Koniginstr 10, D-80539 Munich, Germany
[4] NIM, Schellingstr 4, D-80799 Munich, Germany
[5] Ctr NanoSci CeNS, Schellingstr 4, D-80799 Munich, Germany
[6] Ludwig Maximilians Univ Munchen, Nanospect Grp, Nanoinst Munich, Dept Phys, Koniginstr 10, D-80539 Munich, Germany
[7] Nicolaus Copernicus Univ, Fac Phys Astron & Informat, Inst Phys, 5th Grudziadzka St, PL-87100 Torun, Poland
基金
欧洲研究理事会; 欧盟地平线“2020”; 英国工程与自然科学研究理事会;
关键词
HALIDE PEROVSKITES; LUMINESCENT;
D O I
10.1021/acsenergylett.9b00571
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Perovskite nanoplatelets (NPls) hold promise for light-emitting applications, having achieved photoluminescence quantum efficiencies approaching unity in the blue wavelength range, where other metal-halide perovskites have typically been ineffective. However, the external quantum efficiencies (EQEs) of blue-emitting NPl light-emitting diodes (LEDs) have reached only 0.12%. In this work, we show that NPl LEDs are primarily limited by a poor electronic interface between the emitter and hole injector. We show that the NPIs have remarkably deep ionization potentials (>= 6.5 eV), leading to large barriers for hole injection, as well as substantial nonradiative decay at the NPl/hole-injector interface. We find that an effective way to reduce these nonradiative losses is by using poly(triarylamine) interlayers, which lead to an increase in the EQE of the blue (464 nm emission wavelength) and sky-blue (489 nm emission wavelength) LEDs to 9.3% and 0.55%, respectively. Our work also identifies the key challenges for further efficiency increases.
引用
收藏
页码:1181 / 1188
页数:15
相关论文
共 35 条
[1]   Maximizing and stabilizing luminescence from halide perovskites with potassium passivation [J].
Abdi-Jalebi, Mojtaba ;
Andaji-Garmaroudi, Zahra ;
Cacovich, Stefania ;
Stavrakas, Camille ;
Philippe, Bertrand ;
Richter, Johannes M. ;
Alsari, Mejd ;
Booker, Edward P. ;
Hutter, Eline M. ;
Pearson, Andrew J. ;
Lilliu, Samuele ;
Savenije, Tom J. ;
Rensmo, Hakan ;
Divitini, Giorgio ;
Ducati, Caterina ;
Friend, Richard H. ;
Stranks, Samuel D. .
NATURE, 2018, 555 (7697) :497-+
[2]   High voltage vacuum-deposited CH3NH3PbI3-CH3NH3PbI3 tandem solar cells [J].
Avila, Jorge ;
Momblona, Cristina ;
Boix, Pablo ;
Sessolo, Michele ;
Anaya, Miguel ;
Lozano, Gabriel ;
Vandewal, Koen ;
Miguez, Hernan ;
Bolink, Henk J. .
ENERGY & ENVIRONMENTAL SCIENCE, 2018, 11 (11) :3292-3297
[3]   Boosting Tunable Blue Luminescence of Halide Perovskite Nanoplatelets through Postsynthetic Surface Trap Repair [J].
Bohn, Bernhard J. ;
Tong, Yu ;
Gramlich, Moritz ;
Lai, May Ling ;
Doeblinger, Markus ;
Wang, Kun ;
Hoye, Robert L. Z. ;
Mueller-Buschbaum, Peter ;
Stranks, Samuel D. ;
Urban, Alexander S. ;
Polavarapu, Lakshminarayana ;
Feldmann, Jochen .
NANO LETTERS, 2018, 18 (08) :5231-5238
[4]   Searching for "Defect-Tolerant" Photovoltaic Materials: Combined Theoretical and Experimental Screening [J].
Brandt, Riley E. ;
Poindexter, Jeremy R. ;
Gorai, Prashun ;
Kurchin, Rachel C. ;
Hoye, Robert L. Z. ;
Nienhaus, Lea ;
Wilson, Mark W. B. ;
Polizzotti, J. Alexander ;
Sereika, Raimundas ;
Zaltauskas, Raimundas ;
Lee, Lana C. ;
MacManus-Driscoll, Judith L. ;
Bawendi, Moungi ;
Stevanovic, Vladan ;
Buonassisi, Tonio .
CHEMISTRY OF MATERIALS, 2017, 29 (11) :4667-4674
[5]   Existence of a Size-Dependent Stokes Shift in CsPbBr3 Perovskite Nanocrystals [J].
Brennan, Michael C. ;
Zinna, Jessica ;
Kuno, Masaru .
ACS ENERGY LETTERS, 2017, 2 (07) :1487-1488
[6]   Energy Level Modification in Lead Sulfide Quantum Dot Thin Films through Ligand Exchange [J].
Brown, Patrick R. ;
Kim, Donghun ;
Lunt, Richard R. ;
Zhao, Ni ;
Bawendi, Moungi G. ;
Grossman, Jeffrey C. ;
Bulovic, Vladimir .
ACS NANO, 2014, 8 (06) :5863-5872
[7]   Tunable Light-Emitting Diodes Utilizing Quantum-Confined Layered Perovskite Emitters [J].
Congreve, Daniel N. ;
Weidman, Mark C. ;
Seitz, Michael ;
Paritmongkol, Watcharaphol ;
Dahod, Nabeel S. ;
Tisdale, William A. .
ACS PHOTONICS, 2017, 4 (03) :476-481
[8]   An improved experimental determination of external photoluminescence quantum efficiency [J].
deMello, JC ;
Wittmann, HF ;
Friend, RH .
ADVANCED MATERIALS, 1997, 9 (03) :230-&
[9]   Valence and Conduction Band Densities of States of Metal Halide Perovskites: A Combined Experimental-Theoretical Study [J].
Endres, James ;
Egger, David A. ;
Kulbak, Michael ;
Kerner, Ross A. ;
Zhao, Lianfeng ;
Silver, Scott H. ;
Hodes, Gary ;
Rand, Barry P. ;
Cahen, David ;
Kronik, Leeor ;
Kahn, Antoine .
JOURNAL OF PHYSICAL CHEMISTRY LETTERS, 2016, 7 (14) :2722-2729
[10]   Reducing Architecture Limitations for Efficient Blue Perovskite Light-Emitting Diodes [J].
Gangishetty, Mahesh K. ;
Hou, Shaocong ;
Quan, Qimin ;
Congreve, Daniel N. .
ADVANCED MATERIALS, 2018, 30 (20)