Vikram Dalal


Anson Marston Distinguished Professor


133 Asc1
1915 Scholl Dr
Ames, IA 500111046


2126 Coover # Ames, IA 50011-3060 # Phone: 515-294-1077


Ph.D., Electrical Engineering, Princeton University (1969)

M.P.A, Economics, Princeton University (1975)

B.E., Electrical Engineering, University of Bombay, India (1964)

Research Areas

Core Area(s): Microelectronics and photonics

Department’s Strategic Area(s): Materials, devices & circuits; energy infrastructure

Additional Information


1.J. Bhattacharya, N. Chakravarty, S. Pattnaik, D.Slafer, R. Biswas and V. L. Dalal:          “A photonic-plasmonic structure for enhancing light absorption in thin film solar           cells”   Appl. Phys. Lett., 99    Article Number: 131114(2011)

  1. B. Curtin, R. Biswas and V. L. Dalal, “Photonic crystal based back reflectors for light management and enhanced absorption in amorphous silicon solar cells “
    Appl. Phys. Lett. 95, 231102 (2009)
  2. D. Congreve, S. Kajjam, V. L. Dalal” Influence of oxygen on defect densities in nanocrystalline Si solar cells”, J. Non-Cryst. Solids , 358,2071(2012)
  3. J. Bhattacharya, R. W. Mayer, M. Samiee and V. L. Dalal, “Photo-induced changes in fundamental properties of organic solar cells”, Appl. Phys. Lett. 100, 193501 (2012)


  1. S. Pattnaik, T. Xiao, R. Shinar, J. Shinar and V. L. Dalal, “Hybrid inorganic- organic solar cell” IEEE J. of Photovolt.,3, 295(2013)


  1. Mehran Samiee, Pranav Joshi, Damir Aidarkhanov and Vikram Dalal, “Defect densities and tail states in PTB7”, App. Phys. Lett., 105 , 133511 (2014)
  2. Mehran Samiee, Siva Konduri, Balaji Ganapathy, Ranjith Kottokkaran, Hisham A. Abbas, Andrew Kitahara, Pranav Joshi, Liang Zhang, Max Noackand Vikram Dalal , “Defect density and dielectric constant in perovskite solar cells”, Appl.       Phys. Lett., 105, 153502 (2014)


  1. Hisham Abbas, Ranjith Kottokkaran, Mehran Samiee, Liang Zhang, Balaji Ganapathy, Andrew Kitahara, Max Noack and Vikram L. Dalal, “High    Efficiency  Sequentially Vapor Grown n-i-p CH3NH3PbI3 Perovskite Solar Cells             with Undoped  P3HT as p-type Heterojunction Layer”, APL Mat. 3 , 016105 (2015)

9.P. Joshi, L. Zhang, I. Hossain, H. A. Abbas, R. Kottokkaran, S. P. Nehra, M. Dhaka, M. Noack and Vikram Dalal, “Physics of photo-degradation of perovskite solar cells” AIP Advances, 6, 115114 (2016)


10.Ranjith Kottokkaran, Harsh Gaonkar, B. Bagheri and Vikram Dalal, “Efficient p-i-n inorganic CsPbI3 perovskite solar cell deposited using layer-by-layer vacuum deposition” JVST A, 36, 041201 (2018)


  1. Ranjith Kottokkaran, Harsh Gaonkar, Hisham Abbas, Max Noack and Vikram Dalal, “Performance and stability of co-evaporated vapor deposited perovskite solar cells”, J. Mater. Science, Materials in Electronics (2019)


  1. Bagheri, Behrang; Kottokkaran, Ranjith; Poly, Laila-Parvin; Noack, Max; Dalal, Vikram “Influence of post-deposition selenization and cadmium chloride assisted grain enhancement on electronic properties of cadmium selenide thin films”

AIP ADVANCES  Volume: 9   Issue: 12     Article Number: 125012(2019) 

  1. Harsh Gaonkar, Junhao Zhu, Ranjith Kottokkaran, Behrang Bagheri, Max Noack and Vikram Dalal, “Thermally stable, efficient, vapor deposited perovskite solar cells”, ACS Appl. Energy Materials, 3, 3497 (2020)
  2. Behrang Bagheri, Ranjith Kottokkaran, Laila-Parvin Poly, Saba Sharikadze, Ben Reichert, Max Noack and Vikram Dalal, “Efficient Heterojunction Thin Film CdSe Solar Cells Deposited Using Thermal Evaporation”, Proc. of 46th. IEEE PVSC (2019)