Publications

  1. Use of an underlayer for large area crystallization of rubrene thin films,” M.A. Fusella, S. Yang, K. Abbasi, H.H. Choi, Z. Yao, V. Podzorov, A. Avishai, B.P. Rand, Chem. Mater., doi: 10.1021/acs.chemmater.7b01143 (2017).

  2. Enhanced sub-bandgap efficiency of a solid-state organic intermediate band solar cell using triplet-triplet annihilation,” Y.L. Lin, M. Koch, A.N. Brigeman, D.M.E. Freeman, L. Zhao, H. Bronstein, N.C. Giebink, G.D. Scholes, B.P. Rand, Energy Environ. Sci., 10, 1465 (2017).

  3. Linking chemistry at the TiO2/CH3NH3PbI3 interface to current-voltage hysteresis,” R.A. Kerner, B.P. Rand, J. Phys. Chem. Lett., 8, 2298 (2017).

  4. Electrical stress influences the efficiency of CH3NH3PbI3 perovskite light emitting devices,” L. Zhao, J. Gao, Y.L. Lin, Y.-W. Yeh, K.M. Lee, N. Yao, Y.-L. Loo, B.P. Rand, Adv. Mater., 29, 1605317 (2017).

  5. Homoepitaxy of crystalline rubrene thin films,” M.A. Fusella, F. Schreiber, K. Abbasi, J.J. Kim, A.L. Briseno, B.P. Rand, Nano Lett., 17, 3040 (2017).

  6. In-situ preparation of metal halide perovskite nanocrystal thin films for improved light-emitting devices,” L. Zhao, Y.-W. Yeh, N.L. Tran, F. Wu, Z. Xiao, R.A. Kerner, Y.L. Lin, G.D. Scholes, N. Yao, B.P. Rand, ACS Nano, 11, 3957 (2017).

  7. Electronic structure of the CsPbBr3/polytriarylamine (PTAA) system,” J. Endres, M. Kulbak, L. Zhao, B.P. Rand, D. Cahen, G. Hodes, A. Kahn, J. Appl. Phys., 121, 035304 (2017).

  8. Efficient perovskite light-emitting diodes featuring nanometre-sized crystallites,” Z. Xiao, R.A. Kerner, L. Zhao, N.L. Tran, K.M. Lee, T.-W. Koh, G.D. Scholes, B.P. Rand, Nat. Photon., 11, 108 (2017).

  9. Redox chemistry dominates the degradation and decomposition of metal halide perovskite optoelectronic devices,” L. Zhao, R.A. Kerner, Z. Xiao, Y.L. Lin, K.M. Lee, J. Schwartz, B.P. Rand, ACS Energy Lett., 1, 595 (2016).

  10. Comprehensive method for analyzing the power conversion efficiency of organic solar cells under different spectral irradiances considering both photonic and electrical characteristics,” K.-K. Chong. P.P. Khlyabich, K.-J. Hong, M. Reyes-Martinez, B.P. Rand, Y.-L. Loo, Appl. Energy, 180, 516 (2016).

  11. Revealing the full charge transfer state absorption spectrum of organic solar cells,” A.N. Brigeman, M.A. Fusella, Y. Yan, G.E. Purdum, Y.-L. Loo, B.P. Rand, N.C. Giebink, Adv. Energy Mater., 6, 1601001 (2016).

  12. Valence and conduction band densities of states of metal halide perovskites: A combined experimental - theoretical study,” J. Endres, D.A. Egger, M. Kulbak, R.A. Kerner, L. Zhao, S.H. Silver, G. Hodes, B.P. Rand, D. Cahen, L. Kronik, A. Kahn, J. Phys. Chem. Lett., 7, 2722 (2016).

  13. Diode-pumped organo-lead halide perovskite lasing in a metal-clad distributed feedback resonator,” Y. Jia, R.A. Kerner, A.J. Grede, A.N. Brigeman, B.P. Rand, N.C. Giebink, Nano Lett., 16, 4624 (2016).

  14. Morphological tuning of the energetics in singlet fission organic solar cells,” Y.L. Lin, M.A. Fusella, O.V. Kozlov, X. Lin, A. Kahn, M.S. Pshenichnikov, B.P. Rand, Adv. Funct. Mater., 26, 6489 (2016).

  15. Ultrasmooth metal halide perovskite thin films via sol-gel processing,” R.A. Kerner, L. Zhao, Z. Xiao, B.P. Rand, J. Mater. Chem. A, 4, 8308 (2016).

  16. Determination of energy level alignment within an energy cascade organic solar cell,” J. Endres, I. Pelczer, B.P. Rand, A. Kahn, Chem. Mater., 28, 794 (2016).

  17. Real-time tracking of singlet exciton diffusion in organic semiconductors,” O.V. Kozlov, F. de Haan, R.A. Kerner, B.P. Rand, D. Cheyns, M.S. Pshenichnikov, Phys. Rev. Lett., 116, 057402 (2016).

  18. Interfacial depletion regions: Beyond the space charge limit in thick organic bulk heterojunctions,” J.G. Tait, U.W. Paetzold, D. Cheyns, M. Turbiez, P. Heremans, B.P. Rand, ACS Appl. Mater. Interfaces, 8, 2211 (2016).

  19. Contorted hexabenzocoronenes with extended heterocyclic moieties improve visible light absorption and performance in organic solar cells,” N.C. Davy, G. Man, R.A. Kerner, M.A. Fusella, G. Purdum, M. Sezen, B.P. Rand, A. Kahn, Y.-L. Loo, Chem. Mater., 28, 673 (2016).

  20. A transparent, smooth, thermally robust, conductive polyimide for flexible electronics,” J.A. Spechler, T.-W. Koh, J.T. Herb, B.P. Rand, C.B. Arnold, Adv. Funct. Mater., 25, 7428 (2015).

  21. Enhanced outcoupling in organic light emitting diodes via a high-index contrast scattering layer,” T.-W. Koh, J.A. Spechler, K.M. Lee, C.B. Arnold, B.P. Rand, ACS Photonics, 2, 1366 (2015).

  22. Metal nanocluster light-emitting devices with suppressed parasitic emission and improved efficiency: Exploring the impact of photophysical properties,” T.-W. Koh, A.M. Hiszpanski, M. Sezen, A. Naim, T. Galfsky, A. Trivedi, Y.-L. Loo, V.M. Menon, B.P. Rand, Nanoscale, 7, 9140 (2015).

  23. Absorptive Carbon Nanotube Electrodes: Consequences of Optical Interference Loss in Thin Film Solar Cells,” J.G. Tait, M. De Volder, D. Cheyns, P. Heremans, B.P. Rand, Nanoscale, 7, 7259 (2015).

  24. "3D printed quantum dot light-emitting diodes," Y.L. Kong, I.A. Tamargo, H. Kim, B. Johnson, M.K. Gupta, T.-W. Koh, H.-A. Chin, D.A. Steingart, B.P. Rand, M.C. McAlpine, Nano Lett.14, 7017 (2014)

  25. Ultrasonic spray coating of 6.5% efficient diketopyrrolopyrrole-based organic photovoltaics,” J.G. Tait, C. Wong, D. Cheyns, M. Turbiez, B.P. Rand, P. Heremans, IEEE J. Photovolt., 4, 1538 (2014).

  26. Reducing exciton-polaron annihilation in organic planar heterojunction solar cells,” B. Verreet, A. Bhoolokam, A. Brigeman, R. Dhanker, D. Cheyns, P. Heremans, A. Stesmans, N.C. Giebink, B.P. Rand, Phys. Rev. B, 90, 115304 (2014).

  27. Light-induced degradation of polymer:fullerene photovoltaic devices: An intrinsic or material-dependent failure mechanism?” E. Voroshazi, I. Cardinaletti, T. Conard, B.P. Rand, Adv. Energy Mater.4, 1400848 (2014).

  28. [BOOK] “Organic Solar Cells: Fundamentals, Devices, and Upscaling,” edited by B.P. Rand and H. Richter, Pan Stanford Publishing, ISBN-13: 978-9814463652 (2014).

  29. 8.4% efficient fullerene-free organic solar cells exploiting long-range exciton energy transfer,” K. Cnops, B.P. Rand, D. Cheyns, B. Verreet, M.A. Empl, P. Heremans, Nat. Commun., 5:3406 doi: 10.1038/ncomms4406 (2014).

  30. Accurate spectral response measurements of a complementary absorbing organic tandem cell with fill factor exceeding the subcells,” D. Cheyns, M. Kim, B. Verreet, B.P. Rand, Appl. Phys. Lett., 104, 093302 (2014).

  31. Delocalization and dielectric screening of charge transfer states in organic photovoltaic cells,” B. Bernardo, D. Cheyns, B. Verreet, R.D. Schaller, B.P. Rand, N.C. Giebink, Nat. Commun., 5:3245 doi: 10.1038/ncomms4245 (2014).

  32. Exciton dynamics in an energy upconverting solid state system based on diphenylanthracene doped with platinum octaethylporphyrin,” R. Karpicz, S. Puzinas, V. Gulbinas, A. Vakhnin, A. Kadashchuk, B.P. Rand, Chem. Phys., 429, 57 (2014).

  33. Decreased recombination through the use of a non-fullerene acceptor in a 6.4% efficient organic planar heterojunction solar cell,” B. Verreet, K. Cnops, D. Cheyns, P. Heremans, A. Stesmans, G. Zango, C.G. Claessens, T. Torres, B.P. Rand, Adv. Energy Mater., 4, 1301413 (2014).

  34. Role of electron- and hole-collecting buffer layers on the stability of inverted polymer: fullerene photovoltaic devices,” E. Voroshazi, I. Cardinaletti, G. Uytterhoeven, S. Li, M. Empl, T. Aernouts, B.P. Rand, IEEE J. Photovolt., 4, 265 (2014).

  35. Thin film metal nanocluster light emitting devices,” B. Niesen, B.P. Rand, Adv. Mater., 26, 1446 (2014).

  36. Iso-structural, deeper highest occupied molecular orbital analogues of poly(3-hexylthiophene) for high open circuit voltage organic solar cells,” H. Bronstein, M. Hurhangee, E.C. Fregoso, D. Beatrup, Y.W. Soon, Z. Huang, A. Hadipour, P.S. Tuladhar, S. Rossbauer, E.-H. Sohn, S. Shoaee, S.D. Dimitrov, J.M. Frost, R.S. Ashraf, T. Kirchartz, S.E. Watkins, K. Song, T.D. Anthopoulos, J. Nelson, B.P. Rand, J.R. Durrant, I. McCulloch, Chem. Mater., 25, 4239 (2013).

  37. Microcrystalline organic thin film solar cells,” B. Verreet, P. Heremans, A. Stesmans, B.P. Rand, Adv. Mater., 25, 5504 (2013).

  38. X-ray imager using solution processed organic transistor arrays and bulk heterojunction photodiodes on thin, flexible plastic substrate,” G.H. Gelinck, A. Kumar, D. Moet, J.-L. van der Steen, U. Shafique, P.E. Malinowski, K. Myny, B.P. Rand, M. Simon, W. Rütten, A. Douglas, J. Jorritsma, P. Heremans, R. Andriessen, Org. Electron., 14, 2602 (2013).

  39. Controlling the texture and crystallinity of evaporated lead phthalocyanine thin films for near-infrared sensitive solar cells,” K. Vasseur, K. Broch, A.L. Ayzner, B.P. Rand, D. Cheyns, C. Frank, F. Schreiber, M.F. Toney, L. Froyen, P. Heremans, ACS Appl. Mater. Interfaces, 5, 8505 (2013).

  40. Thieno[3,2-b]thiophene-diketopyrrolopyrrole containing polymers for inverted solar cells devices with high short circuit currents,” H. Bronstein, E. Collado-Fregoso, A. Hadipour, Y.W. Soon, Z. Huang, S.D. Dimitrov, R.S. Ashraf, B.P. Rand, S.E. Watkins, P.S. Tuladhar, I. Meager, J.R. Durrant, I. McCulloch, Adv. Funct. Mater., 23, 5647 (2013).

  41. Resonant-cavity enhanced light harvesting in flexible thin-film organic solar cells,” N.P. Sergeant, B. Niesen, A.S. Liu, L. Boman, C. Stoessel, P. Heremans, P. Peumans, B.P. Rand, S. Fan, Opt. Lett., 38, 1431 (2013).

  42. Effect of fluorination on the properties of a donor-acceptor co-polymer for use in photovoltaic cells and transistors,” H. Bronstein, J.M. Frost, A. Hadipour, Y. Kim, C. Nielsen, R.S. Ashraf, B.P. Rand, S.E. Watkins, I. McCulloch, Chem. Mater., 25, 277 (2013).

  43. Concurrently pumped ultrasonic spray coating for donor:acceptor and thickness optimization of organic solar cells,” J.G. Tait, B.P. Rand, P. Heremans, Org. Electron., 14, 1002 (2013).

  44. Structure induced conductivity enhancement in metal-doped molybdenum oxide thin films,” D. Cheyns, B. Kam, K. Vasseur, P. Heremans, B.P. Rand, J. Appl. Phys., 113, 043109 (2013).

  45. Improved cathode buffer layer to decrease exciton recombination in organic planar heterojunction solar cells,” B. Verreet, P.E. Malinowski, B. Niesen, D. Cheyns, P. Heremans, A. Stesmans, B.P. Rand, Appl. Phys. Lett., 102, 043301 (2013).

  46. Efficient truxenone-based acceptors for organic photovoltaics,” C.B. Nielsen, E. Voroshazi, S. Holliday, K. Cnops, B.P. Rand, I. McCulloch, J. Mater. Chem. A, 1, 73 (2013).

  47. Plasmonic efficiency enhancement of high performance organic solar cells with a nanostructured rear electrode,” B. Niesen, B.P. Rand, P. Van Dorpe, L. Tong, A. Dmitriev, P. Heremans, Adv. Energy Mater., 3, 145 (2013).

  48. Near-field interactions between metal nanoparticle surface plasmons and molecular excitons. Part I: Absorption,” B. Niesen, B.P. Rand, P. Van Dorpe, D. Cheyns, H. Shen, B. Maes, P. Heremans, J. Phys. Chem. C., 116, 24206 (2012).

  49. Near-field interactions between metal nanoparticle surface plasmons and molecular excitons. Part II: Emission,” B. Niesen, B.P. Rand, P. Van Dorpe, E. Fron, M. Van der Auweraer, P. Heremans, J. Phys. Chem. C., 116, 24215 (2012).

  50. Enhanced photocurrent and open-circuit voltage in a 3-layer cascade organic solar cell,” K. Cnops, B.P. Rand, D. Cheyns, P. Heremans, Appl. Phys. Lett., 101, 143301 (2012).

  51. Correlating the polymorphism of titanyl phthalocyanine thin films with solar cell performance,” K. Vasseur, B.P. Rand, D. Cheyns, K. Temst, L. Froyen, P. Heremans, J. Phys. Chem. Lett., 3, 2395 (2012).

  52. Excitation of charge transfer states and low-driving force triplet exciton dissociation at planar donor/acceptor interfaces,” F. Piersimoni, D. Cheyns, K. Vandewal, J.V. Manca, B.P. Rand, J. Phys. Chem. Lett., 3, 2064 (2012).

  53. The impact of molecular orientation on the photovoltaic properties of a phthalocyanine/fullerene heterojunction,” B.P. Rand, D. Cheyns, K. Vasseur, N.C. Giebink, S. Mothy, Y. Yi, V. Coropceanu, D. Beljonne, J. Cornil, J.-L. Bredas, J. Genoe, Adv. Funct. Mater., 22, 2987 (2012).

  54. Understanding metal doping for organic electron transport layers,” A. Mityashin, D. Cheyns, B.P. Rand, P. Heremans, Appl. Phys. Lett., 100, 053305 (2012).

  55. Design of transparent anodes for resonant cavity enhanced light harvesting in organic solar cells,” N.P. Sergeant, A. Hadipour, B. Niesen, D. Cheyns, P. Heremans, P. Peumans, B.P. Rand, Adv. Mater., 24, 728 (2012).

  56. Structural templating of chloro-aluminum phthalocyanine layers for planar and bulk heterojunction organic solar cells,” B. Verreet, R. Muller, B.P. Rand, K. Vasseur, P. Heremans, Org. Electron., 12, 2131 (2011).

  57. A benzotrithiophene-based low band gap polymer for polymer solar cells with high open-circuit voltage,” C.B. Nielsen, B.C. Schroeder, A. Hadipour, B.P. Rand, S.E. Watkins, I. McCulloch, J. Mater. Chem., 21, 17642 (2011).

  58. Novel bis-C60 derivative compared to other fullerene bis-adducts in high efficiency polymer photovoltaic cells,” E. Voroshazi, K. Vasseur, T. Aernouts, P. Heremans, A. Baumann, C. Deibel, X. Xue, A.J. Herring, A.J. Athans, T.A. Lada, H. Richter, B.P. Rand, J. Mater. Chem., 21, 17345 (2011).

  59. Solution processed MoO3 thin films as a hole-injection layer for organic solar cells,” C. Girotto, E. Voroshazi, D. Cheyns, P. Heremans, B.P. Rand, ACS Appl. Mater. Interfaces, 3, 3244 (2011).

  60. Electrode considerations for the optical enhancement of organic bulk heterojunction solar cells,” A. Hadipour, D. Cheyns, P. Heremans, B.P. Rand, Adv. Energy Mater., 1, 930 (2011).

  61. A 4% efficient organic solar cell using a fluorinated fused subphthalocyanine dimer as an electron acceptor,” B. Verreet, B.P. Rand, D. Cheyns, A. Hadipour, T. Aernouts, P. Heremans, A. Medina, C.G. Claessens, T. Torres, Adv. Energy Mater., 1, 565 (2011).

  62. Structural evolution of evaporated lead phthalocyanine thin films for near-infrared sensitive solar cells,” K. Vasseur, B.P. Rand, D. Cheyns, L. Froyen, P. Heremans, Chem. Mater., 23, 886 (2011). 

  63. High-performance organic solar cells with spray-coated hole-transport and active layers,” C. Girotto, D. Moia, B.P. Rand, P. Heremans, Adv. Funct. Mater., 21, 64 (2011).

  64. Introduction to the issue on next-generation organic and hybrid solar cells,” Z. Kafafi, B.P. Rand, K. Lee, R. Janssen, IEEE J. Sel. Topics Quantum Electron., 16, 1512 (2010).

  65. Excitation of multiple dipole surface plasmon resonances in spherical silver nanoparticles,” B. Niesen, B.P. Rand, P. Van Dorpe, H. Shen, B. Maes, J. Genoe, P. Heremans, Opt. Express, 18, 19032 (2010).

  66. Organic tandem solar cells with complementary absorbing layers and a high open-circuit voltage,” D. Cheyns, B.P. Rand, P. Heremans, Appl. Phys. Lett., 97, 033301 (2010).

  67. Strategies for increasing the efficiency of heterojunction organic solar cells: Material selection and device architecture,” P. Heremans, D. Cheyns, B.P. Rand, Acc. Chem. Res., 42, 1740 (2009).

  68. Photocurrent enhancement in polymer:fullerene bulk heterojunction solar cells doped with a phosphorescent molecule,” B.P. Rand, C. Girotto, A. Mityashin, A. Hadipour, J. Genoe, P. Heremans, Appl. Phys. Lett., 95, 173304 (2009).

  69. Organic solar cells with sensitized phosphorescent absorbing layers,” B.P. Rand, S. Schols, D. Cheyns, H. Gommans, C. Girotto, J. Genoe, P. Heremans, J. Poortmans, Org. Electron., 10, 1015 (2009).

  70. The characterization of chloroboron (III) subnaphthalocyanine thin films and their application as a donor material for organic solar cells,” B. Verreet, S. Schols, D. Cheyns, B.P. Rand, H. Gommans, T. Aernouts, P. Heremans, J. Genoe, J. Mater. Chem., 19, 5295 (2009).

  71. Nanoparticle-based, spray-coated silver top contacts for efficient polymer solar cells,” C. Girotto, B.P. Rand, S. Steudel, J. Genoe, P. Heremans, Org. Electron., 10, 735 (2009).

  72. Exploring spray coating as a deposition technique for the fabrication of solution-processed solar cells,” C. Girotto, B.P. Rand, J. Genoe, P. Heremans, Sol. Energy Mater. Sol. Cells, 93, 454 (2009).

  73. On the role of bathocuproine in organic photovoltaic cells,” H. Gommans, B. Verreet, B.P. Rand, R. Muller, J. Poortmans, P. Heremans, J. Genoe, Adv. Funct. Mater., 18, 3686 (2008).

  74. The angular response of ultrathin film organic solar cells,” D. Cheyns, B.P. Rand, B. Verreet, J. Genoe, J. Poortmans, P. Heremans, Appl. Phys. Lett., 92, 243310 (2008).

  75. Analytical model for the open-circuit voltage and its associated resistance in organic planar heterojunction solar cells,” D. Cheyns, J. Poortmans, P. Heremans, C. Deibel, S. Verlaak, B.P. Rand, J. Genoe, Phys. Rev. B, 77, 165332 (2008).

  76. Solar cells utilizing small molecular weight organic semiconductors,” B.P. Rand, J. Genoe, P. Heremans, J. Poortmans, Prog. Photovoltaics, 15, 659 (2007).

  77. Near-infrared sensitive small molecule organic photovoltaic cells based on chloroaluminum phthalocyanine,” R.F. Bailey-Salzman, B.P. Rand, S.R. Forrest, Appl. Phys. Lett., 91, 013508 (2007).

  78. Offset energies at organic semiconductor heterojunctions and their influence on the open-circuit voltage of thin-film solar cells,” B.P. Rand, D.P. Burk, S.R. Forrest, Phys. Rev. B, 75, 115327 (2007).

  79. Enhanced open-circuit voltage in subphthalocyanine/C60 organic photovoltaic cells,” K.L. Mutolo, E.I. Mayo, B.P. Rand, S.R. Forrest, M.E. Thompson, J. Am. Chem. Soc., 128, 8108 (2006).

  80. Semitransparent organic photovoltaic cells,” R.F. Bailey-Salzman, B.P. Rand, S.R. Forrest, Appl. Phys. Lett., 88, 233502 (2006).

  81. Mixed donor-acceptor molecular heterojunctions for photovoltaic applications. I. Material properties,” B.P. Rand, J. Xue, S. Uchida, S.R. Forrest, J. Appl. Phys., 98, 124902 (2005).

  82. Mixed donor-acceptor molecular heterojunctions for photovoltaic applications. II. Device performance,” J. Xue, B.P. Rand, S. Uchida, S.R. Forrest, J. Appl. Phys., 98, 124903 (2005).

  83. Organic solar cells with sensitivity extending into the near-infrared,” B.P. Rand, J. Xue, F. Yang, S.R. Forrest, Appl. Phys. Lett., 87, 233508 (2005).

  84. The effects of copper phthalocyanine purity on organic solar cell performance,” R.F. Salzman, J. Xue, B.P. Rand, A. Alexander, M.E. Thompson, S.R. Forrest, Org. Electron., 6, 242 (2005).

  85. Organic double-heterostructure photovoltaic cells employing thick tris(acetylacetonato) ruthenium(III) exciton-blocking layers,” B.P. Rand, J. Li, J. Xue, R.J. Holmes, M.E. Thompson, S.R. Forrest, Adv. Mater., 17, 2714 (2005).

  86. A hybrid planar-mixed molecular heterojunction photovoltaic cell,” J. Xue, B.P. Rand, S. Uchida, S.R. Forrest, Adv. Mater., 17, 66 (2005).

  87. Long-range absorption enhancement in organic tandem thin film solar cells containing silver nanoclusters,” B.P. Rand, P. Peumans, S.R. Forrest, J. Appl. Phys., 96, 7519 (2004).

  88. Asymmetric tandem organic photovoltaic cells with hybrid planar-mixed molecular heterojunctions,” J. Xue, S. Uchida, B.P. Rand, S.R. Forrest, Appl. Phys. Lett., 85, 5757 (2004).

  89. Organic small molecule solar cells with a homogeneously mixed copper phthalocyanine:C60 active layer,” S. Uchida, J. Xue, B.P. Rand, S.R. Forrest, Appl. Phys. Lett., 84, 4218 (2004).

  90. "4.2% efficient organic photovoltaic cells with low series resistances," J. Xue, S. Uchida, B.P. Rand, S.R. Forrest, Appl. Phys. Lett., 84, 3013 (2004).

  91. Thin film organic position sensitive detectors,” B.P. Rand, J. Xue, M. Lange, S.R. Forrest, IEEE Photon. Technol. Lett., 15, 1279 (2003).