{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,12]],"date-time":"2026-05-12T13:26:07Z","timestamp":1778592367529,"version":"3.51.4"},"reference-count":41,"publisher":"MDPI AG","issue":"1","license":[{"start":{"date-parts":[[2015,1,7]],"date-time":"2015-01-07T00:00:00Z","timestamp":1420588800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>We present a ternary blend-based bulk heterojunction ITO\/PEDOT:PSS\/PFO-DBT: MEH-PPV:PC71BM\/LiF\/Al photodetector. Enhanced optical absorption range of the active film has been achieved by blending two donor components viz. poly[2,7-(9,9-di-octyl-fluorene)-alt-4,7-bis(thiophen-2-yl)benzo-2,1,3-thiadiazole] (PFO-DBT) and poly(2-methoxy-5(2'-ethylhexyloxy) phenylenevinylene (MEH-PPV) along with an acceptor component, i.e., (6,6)-phenyl-C71 hexnoic acid methyl ester. The dependency of the generation rate of free charge carriers in the organic photodetector (OPD) on varied incident optical power density was investigated as a function of different reverse biasing voltages. The photocurrent showed significant enhancement as the intensity of light impinging on active area of OPD is increased. The ratio of Ilight to Idark of fabricated device at \u22123 V was ~3.5 \u00d7 104. The dynamic behaviour of the OPD under on\/off switching irradiation revealed that sensor exhibits quick response and recovery time of \u223c800 ms and 500 ms, respectively. Besides reliability and repeatability in the photoresponse characteristics, the cost-effective and  eco-friendly fabrication is the added benefit of the fabricated OPD.<\/jats:p>","DOI":"10.3390\/s150100965","type":"journal-article","created":{"date-parts":[[2015,1,7]],"date-time":"2015-01-07T12:35:46Z","timestamp":1420634146000},"page":"965-978","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":18,"title":["PFO-DBT:MEH-PPV:PC71BM Ternary Blend Assisted Platform as a Photodetector"],"prefix":"10.3390","volume":"15","author":[{"given":"Qayyum","family":"Zafar","sequence":"first","affiliation":[{"name":"Low Dimensional Materials Research Centre (LDMRC), Department of Physics, Faculty of Science, University of Malaya, 50603 Kuala Lumpur, Malaysia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Zubair","family":"Ahmad","sequence":"additional","affiliation":[{"name":"Low Dimensional Materials Research Centre (LDMRC), Department of Physics, Faculty of Science, University of Malaya, 50603 Kuala Lumpur, Malaysia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Khaulah","family":"Sulaiman","sequence":"additional","affiliation":[{"name":"Low Dimensional Materials Research Centre (LDMRC), Department of Physics, Faculty of Science, University of Malaya, 50603 Kuala Lumpur, Malaysia"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2015,1,7]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"537","DOI":"10.1016\/S0022-0248(01)01305-7","article-title":"AlGaN-based UV photodetectors","volume":"230","author":"Monroy","year":"2001","journal-title":"J. Cryst. Growth"},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"1065","DOI":"10.1002\/1521-3951(200201)229:2<1065::AID-PSSB1065>3.0.CO;2-U","article-title":"Highly Efficient Blue\u2013Ultraviolet Photodetectors Based on II\u2013VI Wide-Bandgap Compound Semiconductors","volume":"229","author":"Ando","year":"2002","journal-title":"Phys. Status Solidi (B)"},{"key":"ref_3","doi-asserted-by":"crossref","unstructured":"Wu, Y., Zhang, X., Pan, H., Zhang, X., Zhang, Y., Zhang, X., and Jie, J. (2013). Large-area aligned growth of single-crystalline organic nanowire arrays for high-performance photodetectors. Nanotechnology, 24.","DOI":"10.1088\/0957-4484\/24\/35\/355201"},{"key":"ref_4","doi-asserted-by":"crossref","first-page":"2433","DOI":"10.1039\/c3cc38996k","article-title":"Aerosol-jet printing of nanowire networks of zinc octaethylporphyrin and its application in flexible photodetectors","volume":"49","author":"Wang","year":"2013","journal-title":"Chem. Commun."},{"key":"ref_5","doi-asserted-by":"crossref","first-page":"6829","DOI":"10.1002\/adma.201303473","article-title":"Fully Inkjet-Printed Organic Photodetectors with High Quantum Yield","volume":"25","author":"Azzellino","year":"2013","journal-title":"Adv. Mater."},{"key":"ref_6","doi-asserted-by":"crossref","first-page":"12266","DOI":"10.3390\/s130912266","article-title":"Visible light communication system using an organic bulk heterojunction photodetector","volume":"13","author":"Arredondo","year":"2013","journal-title":"Sensors"},{"key":"ref_7","doi-asserted-by":"crossref","first-page":"043305:1","DOI":"10.1063\/1.4816502","article-title":"Low dark current small molecule organic photodetectors with selective response to green light","volume":"103","author":"Leem","year":"2013","journal-title":"Appl. Phys. Lett."},{"key":"ref_8","doi-asserted-by":"crossref","first-page":"1005","DOI":"10.1002\/adfm.200305026","article-title":"Nanoscale Morphology of Conjugated Polymer\/Fullerene - Based Bulk - Heterojunction Solar Cells","volume":"14","author":"Hoppe","year":"2004","journal-title":"Adv. Funct. Mater."},{"key":"ref_9","doi-asserted-by":"crossref","unstructured":"Skotheim, T.A., and Reynolds, J. (2006). Conjugated Polymers: Processing and Applications, CRC Press.","DOI":"10.1201\/b10739"},{"key":"ref_10","doi-asserted-by":"crossref","first-page":"2073","DOI":"10.1016\/j.measurement.2013.02.006","article-title":"Bulk heterojunction photodiode: To detect the whole visible spectrum","volume":"46","author":"Ahmad","year":"2013","journal-title":"Measurement"},{"key":"ref_11","doi-asserted-by":"crossref","first-page":"138","DOI":"10.1016\/j.sna.2013.12.013","article-title":"A MEHPPV\/VOPcPhO composite based diode as a photodetector","volume":"206","author":"Zafar","year":"2014","journal-title":"Sens. Actuators A Phys."},{"key":"ref_12","doi-asserted-by":"crossref","first-page":"100701","DOI":"10.1088\/1674-1056\/22\/10\/100701","article-title":"MEH-PPV\/Alq3-based bulk heterojunction photodetector","volume":"22","author":"Ahmad","year":"2013","journal-title":"Chin. Phys. B"},{"key":"ref_13","doi-asserted-by":"crossref","first-page":"2532","DOI":"10.1016\/j.orgel.2012.07.030","article-title":"Investigation of VOPcPhO as an acceptor material for bulk heterojunction solar cells","volume":"13","author":"Abdullah","year":"2012","journal-title":"Org. Electron."},{"key":"ref_14","doi-asserted-by":"crossref","first-page":"1802","DOI":"10.1021\/jz400723u","article-title":"Organic Solar Cells beyond One Pair of Donor-Acceptor\u2013Ternary Blends and More","volume":"4","author":"Yang","year":"2013","journal-title":"J. Phys. Chem. Lett."},{"key":"ref_15","unstructured":"Bhaskaran, M., Sriram, S., and Iniewski, K. (2013). Energy Harvesting with Functional Materials and Microsystems, CRC Press."},{"key":"ref_16","doi-asserted-by":"crossref","first-page":"1324","DOI":"10.1021\/cr050149z","article-title":"Conjugated polymer-based organic solar cells","volume":"107","author":"Neugebauer","year":"2007","journal-title":"Chem. Rev."},{"key":"ref_17","doi-asserted-by":"crossref","first-page":"2702","DOI":"10.1016\/j.orgel.2012.07.033","article-title":"Small organic additive to improve the charge separation in an inverted bulk heterojunction organic photovoltaic","volume":"13","author":"Chen","year":"2012","journal-title":"Org. Electron."},{"key":"ref_18","doi-asserted-by":"crossref","unstructured":"Xu, H., Ohkita, H., Benten, H., and Ito, S. (2014). Open-circuit voltage of ternary blend polymer solar cells. Jpn. J. Appl. Phys., 53.","DOI":"10.7567\/JJAP.53.01AB10"},{"key":"ref_19","doi-asserted-by":"crossref","first-page":"37","DOI":"10.1016\/j.solmat.2013.08.007","article-title":"Triple bulk heterojunctions as means for recovering the microstructure of photoactive layers in organic solar cell devices","volume":"120","author":"Kan","year":"2014","journal-title":"Sol. Energy Mater. Sol. Cells"},{"key":"ref_20","doi-asserted-by":"crossref","first-page":"1087","DOI":"10.1039\/C3RA46105J","article-title":"Ternary blend bulk heterojunction photovoltaic cells with an ambipolar small molecule as the cascade material","volume":"4","author":"Ye","year":"2014","journal-title":"RSC Adv."},{"key":"ref_21","doi-asserted-by":"crossref","unstructured":"Semendy, F., Meissner, G., and Wijewarnasuriya, P. (2011). Electrical and Optical Response Properties of MEH-PPV Semiconductor Polymer Schottky Diodes, DTIC Document.","DOI":"10.21236\/ADA548948"},{"key":"ref_22","doi-asserted-by":"crossref","first-page":"13886","DOI":"10.1021\/ja9066139","article-title":"Development of New Conjugated Polymers with Donor\u2013 \u03c0-Bridge\u2013 Acceptor Side Chains for High Performance Solar Cells","volume":"131","author":"Huang","year":"2009","journal-title":"J. Am. Chem. Soc."},{"key":"ref_23","doi-asserted-by":"crossref","first-page":"1653","DOI":"10.1063\/1.1667614","article-title":"Fluorene-based low band-gap copolymers for high performance photovoltaic devices","volume":"84","author":"Zhou","year":"2004","journal-title":"Appl. Phys. Lett."},{"key":"ref_24","doi-asserted-by":"crossref","first-page":"1337","DOI":"10.1002\/pol.1966.150040602","article-title":"Polymerization of \u03b1-halogenated p-xylenes with base","volume":"4","author":"Gilch","year":"1966","journal-title":"J. Polym. Sci. Part A\u20131: Polym. Chem."},{"key":"ref_25","doi-asserted-by":"crossref","first-page":"1288","DOI":"10.1063\/1.1446988","article-title":"Effect of LiF\/metal electrodes on the performance of plastic solar cells","volume":"80","author":"Brabec","year":"2002","journal-title":"Appl. Phys. Lett."},{"key":"ref_26","doi-asserted-by":"crossref","first-page":"10071","DOI":"10.1021\/ja301460s","article-title":"Systematic investigation of benzodithiophene-and diketopyrrolopyrrole-based low-bandgap polymers designed for single junction and tandem polymer solar cells","volume":"134","author":"Dou","year":"2012","journal-title":"J. Am. Chem. Soc."},{"key":"ref_27","doi-asserted-by":"crossref","first-page":"364","DOI":"10.1016\/j.jallcom.2014.06.007","article-title":"Study of resonance energy transfer between MEH-PPV and CuFeS2 nanoparticle and their application in energy harvesting device","volume":"613","author":"Middya","year":"2014","journal-title":"J. Alloys Compd."},{"key":"ref_28","doi-asserted-by":"crossref","unstructured":"Choy, W.C. (2013). Organic Solar Cells: Materials and Device Physics, Springer.","DOI":"10.1007\/978-1-4471-4823-4"},{"key":"ref_29","doi-asserted-by":"crossref","unstructured":"Yong, Z., Qiong, H., Yue-Qi, M., Jun-Biao, P., and Yong, C. (2006). High-efficiency saturated red bilayer light-emitting diodes: Comparative studies with devices from blend of the same light-emitting polymers. Chin. Phys. Lett., 23.","DOI":"10.1088\/0256-307X\/23\/4\/070"},{"key":"ref_30","doi-asserted-by":"crossref","first-page":"3063","DOI":"10.1002\/adfm.200900832","article-title":"Nanoscale Phase Separation and High Photovoltaic Efficiency in Solution-Processed, Small-Molecule Bulk Heterojunction Solar Cells","volume":"19","author":"Walker","year":"2009","journal-title":"Adv. Funct. Mater."},{"key":"ref_31","doi-asserted-by":"crossref","first-page":"6446","DOI":"10.1039\/c3ta10537g","article-title":"Conjugated polyelectrolyte and zinc oxide stacked structure as an interlayer in highly efficient and stable organic photovoltaic cells","volume":"1","author":"Chang","year":"2013","journal-title":"J. Mater. Chem. A"},{"key":"ref_32","doi-asserted-by":"crossref","first-page":"105","DOI":"10.1039\/C2TA00148A","article-title":"An ester-functionalized diketopyrrolopyrrole molecule with appropriate energy levels for application in solution-processed organic solar cells","volume":"1","author":"Chen","year":"2013","journal-title":"J. Mater. Chem. A"},{"key":"ref_33","doi-asserted-by":"crossref","first-page":"273","DOI":"10.1016\/j.orgel.2011.11.016","article-title":"Synthesis and characterization of triphenylamine flanked thiazole-based small molecules for high performance solution processed organic solar cells","volume":"13","author":"Dutta","year":"2012","journal-title":"Org. Electron."},{"key":"ref_34","unstructured":"Barai, S.L. (2005). A Study of Organic Semiconductor Polymer Material and Device Structures for Application in Optical Detectors. [Master's Thesis, Indian Institute of Technology]."},{"key":"ref_35","doi-asserted-by":"crossref","first-page":"213303:1","DOI":"10.1063\/1.2937018","article-title":"Flexible image sensor array with bulk heterojunction organic photodiode","volume":"92","author":"Ng","year":"2008","journal-title":"Appl. Phys. Lett."},{"key":"ref_36","doi-asserted-by":"crossref","first-page":"093516:1","DOI":"10.1063\/1.2778545","article-title":"High response organic visible-blind ultraviolet detector","volume":"91","author":"Ray","year":"2007","journal-title":"Appl. Phys. Lett."},{"key":"ref_37","doi-asserted-by":"crossref","first-page":"213308:1","DOI":"10.1063\/1.3263144","article-title":"Increasing organic vertical carrier mobility for the application of high speed bilayered organic photodetector","volume":"95","author":"Tsai","year":"2009","journal-title":"Appl. Phys. Lett."},{"key":"ref_38","doi-asserted-by":"crossref","first-page":"3693","DOI":"10.1063\/1.1534621","article-title":"Small molecular weight organic thin-film photodetectors and solar cells","volume":"93","author":"Peumans","year":"2003","journal-title":"J. Appl. Phy."},{"key":"ref_39","doi-asserted-by":"crossref","first-page":"1120","DOI":"10.1039\/c0nr00702a","article-title":"Deep-ultraviolet solar-blind photoconductivity of individual gallium oxide nanobelts","volume":"3","author":"Li","year":"2011","journal-title":"Nanoscale"},{"key":"ref_40","doi-asserted-by":"crossref","first-page":"1430","DOI":"10.1166\/jnn.2010.2157","article-title":"Nanowire photodetectors","volume":"10","author":"Soci","year":"2010","journal-title":"J. Nanosci. Nanotechnol."},{"key":"ref_41","doi-asserted-by":"crossref","first-page":"1649","DOI":"10.1021\/nl0803702","article-title":"Solution-processed ultraviolet photodetectors based on colloidal ZnO nanoparticles","volume":"8","author":"Jin","year":"2008","journal-title":"Nano Lett."}],"container-title":["Sensors"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/1424-8220\/15\/1\/965\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,11]],"date-time":"2025-10-11T20:41:20Z","timestamp":1760215280000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/1424-8220\/15\/1\/965"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2015,1,7]]},"references-count":41,"journal-issue":{"issue":"1","published-online":{"date-parts":[[2015,1]]}},"alternative-id":["s150100965"],"URL":"https:\/\/doi.org\/10.3390\/s150100965","relation":{},"ISSN":["1424-8220"],"issn-type":[{"value":"1424-8220","type":"electronic"}],"subject":[],"published":{"date-parts":[[2015,1,7]]}}}