Laser-Doped Back-Contact Solar Cells

被引：11

作者：

Dahlinger, Morris ^{[1
]}

Bazer-Bachi, Barbara ^{[1
]}

Roeder, Tobias C. ^{[1
]}

Koehler, Juergen R. ^{[1
]}

Zapf-Gottwick, Renate ^{[1
]}

Werner, Juergen H. ^{[1
]}

机构：

[1] Univ Stuttgart, Inst Photovolta, D-70569 Stuttgart, Germany

来源：

IEEE JOURNAL OF PHOTOVOLTAICS | 2015年 / 5卷 / 03期

关键词：

Back contact; back junction; boron emitter; high efficiency (IBC); laser doping; n-type; simulation; UNIFIED MOBILITY MODEL; DEVICE SIMULATION; DIFFUSION;

D O I：

10.1109/JPHOTOV.2015.2411058

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

We present laser-doped interdigitated back-contacted solar cells with a record efficiency eta = 22.0%. The high versatility and spatial resolution of our laser doping process enable local n-type and p-type doping with a precision below 30 mu m and avoid any masking for doping. Nevertheless, the presented solar cells use photolithography (masking) to define the contact area and metallization layout. Quasi-steady-state photoconductance measurements prove the low-saturation current density of the laser doping. We process solar cells with varied pitch and emitter fraction and compare their measured current density-voltage characteristics with a 3-D solar cell simulation. The good agreement of the simulation and experimental data allows a reliable efficiency forecast when optimizations are applied. Furthermore, the influence of the base-busbar region on solar cell performance is discussed.

引用

页码：812 / 818

页数：7

共 38 条

[1] Altermatt PP, 1996, PROG PHOTOVOLTAICS, V4, P355, DOI 10.1002/(SICI)1099-159X(199609/10)4:5<355::AID-PIP145>3.0.CO
[2] 2-X
[3] [Anonymous], 2009, P 24 EUR PHOT SOL EN
[4] [Anonymous], 2008, P 33 IEEE PHOT SPEC
[5] [Anonymous], P 2012 38 IEEE PHOT
[6] The Contribution of Planes, Vertices, and Edges to Recombination at Pyramidally Textured Surfaces
Baker-Finch, Simeon C.
McIntosh, Keith R.
[J]. IEEE JOURNAL OF PHOTOVOLTAICS, 2011, 1 (01): : 59 - 65
[7] Blum Adrienne L., 2013, 28th European Photovoltaic Solar Energy Conference and Exhibition (EU PVSEC 2013). Proceedings, P1521
[8] Optimization of laser processes for local rear contacting of passivated silicon solar cells
Colina, M.
Martin, I.
Voz, C.
Morales-Vilches, A.
Ortega, P.
Lopez, G.
Orpella, A.
Garcia-Molina, M.
Munoz-Martin, D.
Sanchez-Aniorte, M. I.
Molpeceres, C.
Alcubilla, R.
[J]. PROCEEDINGS OF E-MRS SPRING MEETING 2013 SYMPOSIUM D ADVANCED INORGANIC MATERIALS AND STRUCTURES FOR PHOTOVOLTAICS, 2014, 44 : 234 - 243
[9] Dahlinger M., 2011, Proceedings of the 26th European International Conference on Photovoltaic Solar Energy, P1152
[10] 22.0% Efficient laser doped back contact solar cells
Dahlinger, Morris
Bazer-Bachi, Barbara
Roeder, Tobias C.
Koehler, Juergen R.
Zapf-Gottwick, Renate
Werner, Juergen H.
[J]. PROCEEDINGS OF THE 3RD INTERNATIONAL CONFERENCE ON CRYSTALLINE SILICON PHOTOVOLTAICS (SILICONPV 2013), 2013, 38 : 250 - 253

← 1 2 3 4 →