Index-matched IWKB method for the measurement of spatially varying refractive index profiles within thin-film photovoltaics

Optics Express

Volumn 22, Issue 1, 2014, Pages

  Pang, Y T ^a,b   Bossart, M ^c   Eisaman, M D ^a,b  

^a BROOKHAVEN NATIONAL LABORATORY   (United States)

^b STONY BROOK UNIVERSITY   (United States)

^c DARTMOUTH COLLEGE   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

HIGH SPATIAL RESOLUTION; NOVEL TECHNIQUES; ORGANIC PHOTOVOLTAICS; PHOTOACTIVE LAYERS; REFRACTIVE INDEX PROFILES; SPATIALLY VARYING REFRACTIVE INDICES; THIN FILM PHOTOVOLTAICS; THIN-FILM PHOTOVOLTAIC DEVICES;

OPTICAL CONSTANTS; OPTICS;

SINGLE MODE FIBERS;

EID: 84892640554     PISSN: None     EISSN: 10944087     Source Type: Journal    
DOI: 10.1364/OE.22.00A188     Document Type: Article

References (21)

1. O. Lundberg, M. Edoff, and L. Stolt, "The effect of Ga-grading in CIGS thin film solar cells," Thin Solid Films 480-481, 520-525 (2005).
2. D. S. Germack, C. K. Chan, R. J. Kline, D. A. Fischer, D. J. Gundlach, M. F. Toney, L. J. Richter, and D. M. DeLongchamp, "Interfacial segregation in polymer/fullerene blend films for photovoltaic devices," Macromolecules 43(8), 3828-3836 (2010).
3. A. Ashraf, D. M. N. M. Dissanayake, D. S. Germack, C. R. Weiland, and M. D. Eisaman, "Confinement-induced reduction in phase segregation and interchain disorder in bulk heterojunction films," ACS Nano (2013).
4. B. H. Hamadani, S. Jung, P. M. Haney, L. J. Richter, and N. B. Zhitenev, "Origin of nanoscale variations in photoresponse of an organic solar cell," Nano Lett. 10(5), 1611-1617 (2010).
5. R. Scheer, C. Knieper, and L. Stolt, "Depth dependent collection functions in thin film chalcopyrite solar cells," Appl. Phys. Lett. 67(20), 3007-3009 (1995).
6. R. Scheer, M. Wilhelm, H. J. Lewerenz, H. W. Schock, and L. Stolt, "Determination of charge carrier collecting regions in chalcopyrite heterojunction solar cells by electron-beam-induced current measurements," Sol. Energy Mater. Sol. Cells 49(1-4), 299-309 (1997).
7. R. Kniese, M. Powalla, and U. Rau, "Evaluation of electron beam induced current profiles of Cu(In,Ga)Se2 solar cells with different Ga-cotents," Thin Solid Films 517(7), 2357-2359 (2009).
8. D. M. N. M. Dissanayake, A. Ashraf, Y. Pang, and M. D. Eisaman, "Mapping spatially resolved charge collection probability within P3HT:PCBM bulk heterojunction photovoltaics," Adv. Energy Mater. (2013).
9. R. A. Marsh, C. Groves, and N. C. Greenham, "A microscopic model for the behavior of nanostructured organic photovoltaic devices," J. Appl. Phys. 101(8), 083509 (2007).
10. W. S. Koh, M. Pant, Y. A. Akimov, W. P. Goh, and Y. Li, "Three-dimensional optoelectronic model for organic bulk heterojunction solar cells," IEEE J. Photovoltaics 1(1), 84-92 (2011).
11. Z. Cao, Y. Jiang, Q. Shen, X. Dou, and Y. Chen, "Exact analytical method for planar optical waveguides with arbitrary index profile," J. Opt. Soc. Am. A 16(9), 2209-2212 (1999).
12. K. S. Chiang, "Construction of refractive-index profiles of planar dielectric waveguides from the distribution of effective indexes," J. Lightwave Technol. 3(2), 385-391 (1985).
13. L. P. Shi, E. Y. B. Pun, and P. S. Chung, "Extended IWKB method for determination of the refractive=index profile in optical waveguides," Opt. Lett. 20(15), 1622-1624 (1995).
14. H. Zhu, Z. Cao, and Q. Shen, "Construction of refractive-index profiles of planar waveguides with additional information obtained from surface plasmon resonance," Appl. Opt. 44(16), 3174-3178 (2005).
15. I. Lumerical Solution, http://www.lumerical.com/tcad-products/fdtd/.
16. D. M. N. M. Dissanayake, A. Ashraf, Y. Pang, and M. D. Eisaman, "Guided-mode quantum efficiency: A novel optoelectronic characterization technique," Rev. Sci. Instrum. 83(11), 114704 (2012).
17. R. Ulrich and R. Torge, "Measurement of thin film parameters with a prism coupler," Appl. Opt. 12(12), 2901-2908 (1973).
18. P. K. Tien, R. Ulrich, and R. J. Martin, "Modes of propagating light waves in thin deposited semiconductor films," Appl. Phys. Lett. 14(9), 291-294 (1969).
19. Y. Pochi, Optical Waves in Layered Media (John Wiley, 1988).
20. G. Yu, J. Gao, J. C. Hummelen, F. Wudl, and A. J. Heeger, "Polymer photovoltaic cells: enhanced efficiencies via a network of internal donor-acceptor heterojunctions," Science 270(5243), 1789-1791 (1995).
21. M. Khardani, M. Bouaïcha, and B. Bessaïs, "Bruggeman effective medium approach for modelling optical properties of porous silicon: comparison with experiment," Phys. Status Solidi 4(c), 1986-1990 (2007).