akrajas bin ali umar;tengku hasnan bin tengku abdul aziz;mohd yusri bin abd rahman.  (2020).  high performance organometal halide perovskite solar cells utilizing high-surface energy (001) faceted anatase tio2 nanosheets.  - .  . 

mohd yusri bin abd rahman;muhamad bin mat salleh;akrajas bin ali umar.  (2019).  barium titanate (batio3) doped titanium dioxide (tio2) films as photoanode for dye-sensitized solar cell (dssc).  - .  1-5. 

n. mustaffa. m. y. a. rahman. a. a. umar.  (2019).  dye-sensitized solar cell utili zing silver-doped reduced graphene oxide films counter electrode: influence of annealing temperature on its performance.  - the 4th malaysia-japan joint symposium on nanoelectronics 2019.  1-5. 

a.s. sulaiman, m.y.a. rahman & a.a. umar.  (2018).  gold doped reduced graphene oxide as counter electrode in dye-sensitized solar cell.  - imen postgraduate colloquium 2018.  . 

akrajas bin ali umar;muhamad bin mat salleh;mohd yusri bin abd rahman.  (2018).  engineering the two-dimensional hexagonal honeycomb crystal of noble metal chalcogenide for high-performance optoelectronic materials..  - .  . 

s.n. sadikin, m.y.a. rahman & a.a. umar.  (2018).  tio2-zns and tio2-graphene films as photoanodes in dye-sensitized solar cell (dssc).  - .  . 

m.s. su`ait; a. ahmad; m.y.a. rahman; n.s. mohamed; c.l. azanza ricardo; p. scardi.  (2015).  potential of cu2znsns4 semiconductor based dye-sensitized solar cell.  - 5th international conference on functional materials & devices 2015 (icfmd - 2015).  . 

akrajas ali umar, muhamad bin mat salleh, mohd yusri bin abd rahman, muhammad bin yahaya.  (2014).  growth of ultraporous platinum nanocrystal directly on ito substrate: investigation on the effect of sodium deocyl sulfate surfactant and formic acid reducingagent on the morphology and their applica….  - .  .