.

Browsing by Author "Koech, Richard"

Browsing by Author "Koech, Richard"

Sort by: Order: Results:

  • Annealing effects on interdiffusion in layered FA-rich perovskite solar cells 
    Oyewole, D. O.; Koech, Richard; Ichwani, R.; Ahmed, R.; Tamayo, J. Hinostroza; Adeniji, S. A.; Cromwell, J.; Ullo, E. Colin; Oyewole, O. K.; Agyei-Tuffour, B.; Titova, L. V.; Burnham, N. A.; Soboyejo, W. O. (AIP Advances, 2021-06-23)
    Annealing is one of the processing methods that are used for the fabrication of defect-free, photoactive perovskite films with compact grains in highly efficient and stable perovskite solar cells (PSCs). Thus, the annealing ...
  • Combustion synthesis of battery-type positive electrodes for robust aqueous hybrid supercapacitor 
    Bello, A.; Sanni, D.M.; Adeniji, S.A.; Anye, V.; Orisekeh, K.; Kigozi, M.; Koech, Richard (Journal of Energy Storage, 2020-02)
    Producing materials with suitable features including robust, and high electrical conductivity for the realization of excellent electrochemical performance for supercapacitor devices remains a great challenge. In this regard, ...
  • Failure of Stretchable Organic Solar Cells under Monotonic and Cyclic Loading 
    Oyewole, Oluwaseun; Oyewole, Deborah; Oyelade, Omolara; Adeniji, Sharafadeen; Koech, Richard; Asare, Joseph; Agyei-Tuffour, Benjamin; Soboyejo, Winston (Macromolecular Materials and Engineering, 2020-09)
    Results of experimental and computational studies of failure of stretchable organic solar cells (SOSCs) are presented here. The SOSCs are produced by the deposition of poly(3,4?ethylenedioxythiophene):polystyrene sulfonate ...
  • Interfacial fracture of hybrid organic-inorganic perovskite solar cells 
    Ichwani, Reisya; Koech, Richard; K.Oyewole, Oluwaseun; Huda, Adri; O.Oyewole, Deborah; Cromwell, Jaya; L.Martin, Julia; L.Grimm, Ronald; O.Soboyejo, Winston (Extreme Mechanics Letters, 2021-11-17)
    The interfacial robustness of perovskite solar cells (PSCs) is important due to the potential for failure resulting from applied loads or deformation in devices that are fabricated on rigid or flexible substrates, and/or ...
  • Pressure-assisted fabrication of perovskite light emitting devices 
    S. A. Adeniji; J. Cromwell; J. Cromwell; D. O. Oyewole; O. V. Oyelade; Koech, Richard; D. M. Sanni; O. K. Oyewole; B. Babatope; W. O. Soboyejo (AIP Advances, 2021-02-05)
    This paper presents the results of pressure-effects on performance characteristics of near-infra-red perovskite light emitting diodes (PeLEDs) using a combination of experimental and analytical/computational approaches. ...
  • Recent advances in solar energy harvesting materials with particular emphasis on photovoltaic materials 
    Koech, Richard; Kigozi, M.; Bello, A.; Onwualu, P.A; Soboyejo, W. (IEEE, 2019-08)
    The use of solar energy, as an alternative to the conventional fossil fuel based resources, has increased tremendously over the years due to its enormous and environmentally benign nature. In an effort to make solar energy ...
  • The role of hafnium acetylacetonate buffer layer on the performance of lead halide perovskite solar cells derived from dehydrated lead acetate as Pb source 
    D. M. Sanni; E. Ntsoenzok; E. Saintaime; S. A. Adeniji; O. V. Oyelade; Koech, Richard; D. I. Amune; A. Bello (AIP Advances, 2020)
    In this research, we demonstrated the use of hafnium acetylacetonate (Hfaca) dissolved in ethanol as a buffer layer for perovskite solar cells from non-halide Pb (dehydrated lead acetate) source material. The inverted p-i-n ...
  • A study of the effects of a thermally evaporated nanoscale CsBr layer on the optoelectronic properties and stability of formamidinium-rich perovskite solar cells 
    Koech, Richard; Ichwani, Reisya; Martin, Julia L.; Oyewole, Deborah O.; Oyelade, Omolara V.; Olanrewaju, Yusuf A.; Sanni, Dahiru M.; Adeniji, Sharafadeen A.; Grimm, Ronald L.; Bello, Abdulhakeem; Oyewole, Oluwaseun K.; Ntsoenzok, Esidor; Soboyejo, Winston O. (AIP Advances, 2021-09-15)
    Incorporation of cesium (Cs) into the perovskite layer has become a good strategy to boost the stability and power conversion efficiency (PCE) of perovskite solar cells (PSCs). However, a suitable and scalable method of ...

Search RSIF Digital Repository

Browse

My Account