Numerical simulation and modeling of spectral conversion by silicon nanocrystals with multiple exciton generation

被引：2

作者：

Ding, Wuchang ^{[1
]}

Jia, Rui ^{[1
]}

Wu, Deqi ^{[1
]}

Chen, Chen ^{[1
]}

Li, Haofeng ^{[1
]}

Liu, Xinyu ^{[1
]}

Ye, Tianchun ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Microelect, Beijing 100029, Peoples R China

来源：

JOURNAL OF APPLIED PHYSICS | 2011年 / 109卷 / 05期

关键词：

SEMICONDUCTOR NANOCRYSTALS; CARRIER MULTIPLICATION; SOLAR-CELLS; ABSORPTION; LUMINESCENCE; AUGER;

D O I：

10.1063/1.3549697

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Silicon nanocrystals (Si-NCs) were applied on the front surface of a conventional silicon solar cell. Considering absorption with multiple exciton generation (MEG) yields and consequently photoluminescence, the cell performance was simulated based on a numerical model founded on experimental results in literature. The results show that the cell efficiency could be prominently enhanced by MEG yields and spectral down-conversion. However, though MEG yields could reach 250% within Si-NCs, it only contributes 8.7% to the cell efficiency enhancement while wavelength shifting dominates the cell efficiency enhancement mechanism. Additionally, extraction factor which is defined as ratio of photons extracted from Si-NCs to the generated carries in Si-NCs is the most critical parameter for cell performance improvement. Therefore, to realize this novel structure cell, further experimental work should be lay on improving MEG efficiency as well as photoluminescence efficiency and optical confinement of the photoluminescence. (C) 2011 American Institute of Physics. [doi:10.1063/1.3549697]

引用

页数：7

共 24 条

[11] Size dependence of lifetime and absorption cross section of Si nanocrystals embedded in SiO2 [J].

Garcia, C ;

Garrido, B ;

Pellegrino, P ;

Ferre, R ;

Moreno, JA ;

Morante, JR ;

Pavesi, L ;

Cazzanelli, M .

APPLIED PHYSICS LETTERS, 2003, 82 (10) :1595-1597

[12] Correlation between luminescence and structural properties of Si nanocrystals [J].

Iacona, F ;

Franzò, G ;

Spinella, C .

JOURNAL OF APPLIED PHYSICS, 2000, 87 (03) :1295-1303

[13] Carrier multiplication in a PbSe nanocrystal and P3HT/PCBM tandem cell [J].

Kim, Sung Jin ;

Kim, Won Jin ;

Cartwright, Alexander N. ;

Prasad, Paras N. .

APPLIED PHYSICS LETTERS, 2008, 92 (19)

[14] Multiple exciton generation and electrical extraction from a PbSe quantum dot photoconductor [J].

Kim, Sung Jin ;

Kim, Won Jin ;

Sahoo, Yudhisthira ;

Cartwright, Alexander N. ;

Prasad, Paras N. .

APPLIED PHYSICS LETTERS, 2008, 92 (03)

[15] Single-exciton optical gain in semiconductor nanocrystals [J].

Klimov, Victor I. ;

Ivanov, Sergei A. ;

Nanda, Jagjit ;

Achermann, Marc ;

Bezel, Ilya ;

McGuire, John A. ;

Piryatinski, Andrei .

NATURE, 2007, 447 (7143) :441-446

[16] QUANTUM EFFICIENCIES EXCEEDING UNITY DUE TO IMPACT IONIZATION IN SILICON SOLAR-CELLS [J].

KOLODINSKI, S ;

WERNER, JH ;

WITTCHEN, T ;

QUEISSER, HJ .

APPLIED PHYSICS LETTERS, 1993, 63 (17) :2405-2407

[17] Multiparticle interactions and stimulated emission in chemically synthesized quantum dots [J].

Mikhailovsky, AA ;

Malko, AV ;

Hollingsworth, JA ;

Bawendi, MG ;

Klimov, VI .

APPLIED PHYSICS LETTERS, 2002, 80 (13) :2380-2382

[18] Raman, photoluminescence and optical absorption studies on nanocrystalline silicon [J].

Mishra, P ;

Jain, KP .

MATERIALS SCIENCE AND ENGINEERING B-SOLID STATE MATERIALS FOR ADVANCED TECHNOLOGY, 2002, 95 (03) :202-213

[19] PbTe colloidal nanocrystals: Synthesis, characterization, and multiple exciton generation [J].

Murphy, JE ;

Beard, MC ;

Norman, AG ;

Ahrenkiel, SP ;

Johnson, JC ;

Yu, PR ;

Micic, OI ;

Ellingson, RJ ;

Nozik, AJ .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2006, 128 (10) :3241-3247

[20] Multiple exciton generation in semiconductor quantum dots [J].

Nozik, Arthur J. .

CHEMICAL PHYSICS LETTERS, 2008, 457 (1-3) :3-11

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