Assessing the Optoelectronic Performance of Halide Perovskite Quantum Dots with Identical Bandgaps: Composition Tuning Versus Quantum Confinement
文献类型：期刊论文
| 作者 | Hu, Long1,11; Guan, Xinwei2; Huang, Hehe3; Ye, Tingting4; Ding, Junfeng4; Aarti, Aarti5; Venkatesan, Koushik5; Wang, Weizhen6; Chen, Fandi11; Lin, Chun-Ho11 |
| 刊名 | ACS ENERGY LETTERS
 |
| 出版日期 | 2024-07-19 |
| ISSN号 | 2380-8195 |
| DOI | 10.1021/acsenergylett.4c01180 |
| 通讯作者 | Chu, Dewei(d.chu@unsw.edu.au) ; Cai, Songhua(songhua.cai@polyu.edu.hk) ; Yuan, Jianyu(jyyuan@suda.edu.cn) ; Wu, Tom(tom.wu@unsw.edu.au) ; Huang, Shujuan(shujuan.huang@mq.edu.au) |
| 英文摘要 | Halide perovskite quantum dots (QDs) have been considered promising materials for constructing low-cost, high-performing optoelectronics. Tuning their bandgaps can be accomplished through size-dependent quantum confinement or altering chemical compositions. To unravel the differences and similarities between these two approaches, two types of QDs, namely, CsPbI3 and CsPbI2.5Br0.5 QDs, were synthesized with different sizes but with the same bandgap of 1.85 eV. Aberration-corrected scanning transmission electron microscopy reveals extensive structural defects and nonperovskite phase in mixed-halide QDs, correlating with the nonuniform strain distribution. Pressure-dependent photoluminescence (PL) suggests lower structural stability and distinct lattice distortion in mixed-halide QDs. Furthermore, time-resolved PL and transient absorption measurements indicate longer carrier lifetimes in pure-halide QDs. Finally, the CsPbI3 QD solar cell delivered an enhanced power conversion efficiency of 16.1% compared with the mixed-halide counterpart (12.8%). This work provides valuable insights into tailoring quantum confinement and composition engineering strategies for achieving QDs with optimal optoelectronic performance. |
| WOS关键词 | OPTICAL-PROPERTIES ; SOLAR-CELLS ; ALPHA-CSPBI3 PEROVSKITE ; PHASE SEGREGATION ; PHOTOLUMINESCENCE ; EFFICIENCY ; TRANSPORT ; CSPBX3 ; PHOTOVOLTAICS ; PASSIVATION |
| 资助项目 | National Key Research and Development Program of China[2023YFE021000] ; Australia Research Council[DE230101711] ; Australia Research Council[DP230101847] ; Australia Research Council[DE240100179] ; Australia Research Council[LP200200979] ; Department of Applied Physics ; Hong Kong Polytechnic University (1-BDCM) ; Hong Kong Research Grants Council (RGC) General Research Fund[15306122] |
| WOS研究方向 | Chemistry ; Electrochemistry ; Energy & Fuels ; Science & Technology - Other Topics ; Materials Science |
| 语种 | 英语 |
| WOS记录号 | WOS:001273657200001 |
| 出版者 | AMER CHEMICAL SOC |
| 资助机构 | National Key Research and Development Program of China ; Australia Research Council ; Department of Applied Physics ; Hong Kong Polytechnic University (1-BDCM) ; Hong Kong Research Grants Council (RGC) General Research Fund |
| 源URL | [http://ir.hfcas.ac.cn:8080/handle/334002/137256]  |
| 专题 | 中国科学院合肥物质科学研究院 |
| 通讯作者 | Chu, Dewei; Cai, Songhua; Yuan, Jianyu; Wu, Tom; Huang, Shujuan |
| 作者单位 | 1.Macquarie Univ, Macquarie Univ Sustainable Energy Res Ctr, Sch Engn, Sydney, NSW 2109, Australia 2.Univ Newcastle, Coll Engn Sci & Environm, Global Innovat Ctr Adv Nanomat, Sch Engn, Callaghan, NSW 2308, Australia 3.Soochow Univ, Inst Funct Nano & Soft Mat FUNSOM, Suzhou 215123, Jiangsu, Peoples R China 4.Chinese Acad Sci, Key Lab Mat Phys, Inst Solid State Phys, Hefei Inst Phys Sci, Hefei 230031, Peoples R China 5.Macquarie Univ, Sch Nat Sci, MQ Photon Res Ctr, Sydney, NSW 2109, Australia 6.Hong Kong Polytech Univ, Dept Appl Phys, Kowloon, Hong Kong 999077, Peoples R China 7.Univ Sydney, Sch Phys, Sydney, NSW 2006, Australia 8.Curtin Univ, Sch Mol & Life Sci, Perth, WA 6102, Australia 9.Univ Politecn Cataluna, Dept Fis, E-08034 Barcelona, Spain 10.Chinese Acad Sci, Inst Technol Carbon Neutral, Shenzhen Inst Adv Technol, Fac Mat Sci & Energy Engn, Shenzhen 518055, Guangdong, Peoples R China |
| 推荐引用方式 GB/T 7714 | Hu, Long,Guan, Xinwei,Huang, Hehe,et al. Assessing the Optoelectronic Performance of Halide Perovskite Quantum Dots with Identical Bandgaps: Composition Tuning Versus Quantum Confinement[J]. ACS ENERGY LETTERS,2024. |
| APA | Hu, Long.,Guan, Xinwei.,Huang, Hehe.,Ye, Tingting.,Ding, Junfeng.,...&Huang, Shujuan.(2024).Assessing the Optoelectronic Performance of Halide Perovskite Quantum Dots with Identical Bandgaps: Composition Tuning Versus Quantum Confinement.ACS ENERGY LETTERS. |
| MLA | Hu, Long,et al."Assessing the Optoelectronic Performance of Halide Perovskite Quantum Dots with Identical Bandgaps: Composition Tuning Versus Quantum Confinement".ACS ENERGY LETTERS (2024). |
入库方式： OAI收割
来源：合肥物质科学研究院
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