hind fadhil oleiwi, azmi zakaria, chi chin yap, haidr abdulzahra abbas, sin tee tan, hock beng lee, chun hui tan, riski titian ginting, abdelelah alshanableh, and zainal abidin talib.  (2017).  enhanced photovoltaic performance of cds-sensitized inverted organic solar cells prepared via a successive ionic layer adsorption and reaction method.  - the 1st ukm-isesco-comsats international workshop on nanotechnology for young scientists (iwys2016), aip conference proceedings.  20007. 

hock beng lee, sin tee tan, riski titian ginting, chun hui tan, hind fadhil oleiwi, chi chin yap and mohd. hafizuddin haji jumali.  (2016).  tailoring the photovoltaic performance of inverted hybrid solar cells by replacing pedot:pss with v2ox as hole-extraction layer.  - the 2016 ukm fst postgraduate colloquium, aip conference proceedings.  1-5. 

nasehah syamin sabri, chi chin yap, muhammad yahaya, muhamad mat salleh and mohammad hafizuddin haji jumali.  (2016).  solution-dispersed cuo nanoparticles anode buffer layer: effect of ultrasonic agitation duration on photovoltaic performance.  - the 2016 ukm fst postgraduate colloquium,aip conference proceedings.  1-6. 

chun hui tan, sin tee tan, hock beng lee, chi chin yap and muhammad yahaya.  (2016).  growth concentration effect on oxygen vacancy induced band gap narrowing and optical co gas sensing properties of zno nanorod.  - the 2016 ukm fst postgraduate colloquium, aip conference proceedings.  1-5. 

nasehah syamin sabri, chi chin yap, muhammad yahaya, muhamad mat salleh, mohammad hafizuddin haji jumali.  (2016).  effects of ch3nh3pbi(3-x)clx perovskite layer on the performance of inverted type hybrid organic solar cells based on zno/p3ht.  - materials science forum.  292-297. 

m. yahaya, sin tee tan, akrajas ali umar, c.c. yap, and m.m. salleh.  (2014).  synthesis of zno nanorod arrays by chemical solution and microwave method for sensor application.  - key engineering materials.  585-588. 

marjoni imamora ali umar, chi chin yap, rozidawati awang, muhamad mat salleh and muhammad yahaya.  (2013).  effect of graphite oxide solution concentration on the properties of multilayer graphene.  - aip conference proceeding- the 2013 ukm fst postgraduate colloquium.  . 

sin tee tan, akrajas ali umar, muhamad yahaya, chi chin yap, muhamad mat salleh.  (2013).  ultrafast formation of zno nanorods via seed-mediated microwave assisted hydrolysis process.  - journal of physics: conference series 3rd isesco international workshop and conference on nanotechnology 2012 (iwcn2012).  . 

nasehah syamin sabri, chi chin yap, muhammad yahaya, and muhamad mat salleh.  (2013).  mehppv : pcbm-based bulk heterojunction organic solar cell blended with various organic salts.  - aip conference proceedings (2012 national physics conference).  . 

bandar ali al-asbahi, mohammad hafizuddin haji jumali, chi chin yap, muhamad mat salleh.  (2013).  enhancement of poly(9,9'-di-n-octylfluorenyl-2.7-diyl) optoelectronic properties in novel conjugated polymer/laser dye hybrid oleds.  - isesco conference on nanomaterials and applications 2012.  281-288. 

n. b. ibrahim, r. abd-shukor, i. abdul rahman, z. ibarahim, c.c.yap.  (2013).  american institute of physics conference proceedings (2012 national physics conference proceedings).  - american institute of physics conference proceedings 2012 national physics conference proceedings.  . 

riski titian ginting, chi chin yap, muhammad yahaya and muhamad mat salleh.  (2013).  impedance spectroscopy characterization of inverted type organic solar cells based on poly(3-hexylthiophene-2,5-diyl).  - aip conference proceeding- the 2013 ukm fst postgraduate colloquium.  . 

nasehah syamin sabri, chi chin yap, muhammad yahaya and muhamad mat salleh.  (2013).  effect of simultaneous electrical and thermal treatment on the performance of bulk heterojunction organic solar cell blended with organic salt.  - aip conference proceeding- the 2013 ukm fst postgraduate colloquium.  . 

nasehah syamin, chi chin yap, muhammad yahaya, muhamad mat salleh.  (2012).  effect of electric field treatment on the performance of organic salt doped solar cell.  - 26th regional conference on solid state science and technology, rcssst 2011;seremban, negeri sembilan (advanced materials research).  . 

yahaya, m; yap, cc; salleh, mm.  (2012).  effect of dye coating duration on the performance of inverted type organic bulk heterojunction solar cell based on eosin-y coated zno nanorod arrays.  - 2nd international conference on mechanical and aerospace engineering, icmae 2011;bangkok.  . 

dee, cf; yap, sl; yap, cc; wong, cs; majlis, by.  (2012).  study on the effect of ar ion beam bombardment on zno nanowires.  - 2nd asean-apctp workshop on advanced materials science and nanotechnology (amsn);malaysia.  . 

riski titian ginting, chi chin yap, muhammad yahaya, muhamad mat salleh.  (2012).  effect of eosin-y coating temperature on the performance of inverted bulk heterojunction organic solar cells.  - 26th regional conference on solid state science and technology, rcssst 2011;seremban, negeri sembilan (advanced materials research).  . 

eng liang lim, chi chin yap, muhammad yahaya, muhamad mat salleh.  (2012).  zno nanorod arrays coated with eosin-y at different concentrations for inverted bulk heterojunction organic solar cells.  - 26th regional conference on solid state science and technology, rcssst 2011;seremban, negeri sembilan (advanced materials research).  . 

mokhtar, msam; yap, cc; salleh, mm; umar, aa; yahaya, m.  (2011).  effect of organic salt doping ratios on the performance of poly(9,9-di-n-hexylfluorenyl-2,7-diyl) organic light emitting diode, oled.  - malaysia annual physics conference 2010, perfik-2010; damai laut(aip conference proceedings).  . 

badariah bais, shamsul rahimi a. subki, chi chin yap, chang fu dee and burhanuddin yeop majlis,.  (2011).  process development on synthesizing zinc oxide nanorods and fabrication of idt finger electrodes for surface acoustic wave devices.  - 2011 ieee regional symposium on micro and nano electronics, rsm 2011; kota kinabalu, sabah.  . 

mohd shahrul akram mokhtar, muhamad mat salleh, akrajas ali umar, chi chin yap, muhammad yahaya.  (2010).  effect of organic salt doping on the performance of poly(9,9-di-n-hexylfluorenyl-2,7-diyl) organic light emitting diode, oled.  - aip conference proceeding (the third nanoscience nanotechnology symposium 2010 : nnsb 2010).  . 

abdullah, h; ariyanto, np; yuliarto, b; junaidi, s; chin, yc; yahaya, m; shaari, s.  (2010).  fabrication and characterization of flower-like zinc oxide for dye-sensitized solar cell photoanode.  - 2nd wseas international conference on nanotechnology/5th wseas international conference on optics astrophysics-astronomy /1st wseas international conference plasma, fusion, nuclear physics, feb 20-22,.  .