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http://hdl.handle.net/2289/6734| Title: | Bulk heterojunction solar cells made from carbazole copolymer and fullerene derivative with an inserted layer of discotic material with improved efficiency |
| Authors: | Bajpai, Manisha Yadav, Neelam Kumar, Sandeep Srivastava, Ritu Dhar, Ravindra |
| Keywords: | Liquid crstals mobility efficiency |
| Issue Date: | Feb-2017 |
| Publisher: | Taylor & Francis |
| Citation: | Liquid Crystals, 2017, Vol.44, p 379-386 |
| Abstract: | Bulk heterojunction photovoltaic cells based on composites of copolymer poly [N-90-hepta-decanyl-2,7-carbazole-alt-5,5-(40,70-di-2-thienyl-20,10,30-benzothiadiazole)] and the fullerene derivative [6,6]-phenyl C71-butyric acid methyl ester with an inserted layer of discotic liquid crystalline material (2, 3, 6, 7, 10, 11-hexabutyloxytriphenylene) between the interface of active layer and hole transporting layer has been reported. Different hole transporting layers deposited on indium tin oxide substrates such as poly (3,4-ethylenedioxythiophene)-poly (styrenesulphonate) or molybdenum trioxide has been used in these devices. All the devices with inserted discotic liquid crystal layer showed better performance than the reference cells. Power conversion efficiency of 5.14% was achieved for these photovoltaic solar cells containing self-organised discotic liquid crystal layer of 30 nm thickness under one sun condition which is substantial jump as compared to earlier reports. The mobility of holes in the discotic liquid crystal inserted devices was found to be of the order of 10–6 cm2 V–1 s–1 due to which high values of current density was achieved. The influence of varying the thickness of liquid crystal layer and annealing on the photovoltaic parameters of these devices was also studied. |
| Description: | Restricted Access. |
| URI: | http://hdl.handle.net/2289/6734 |
| ISSN: | 0267-8292 1366-5855 (Online) |
| Alternative Location: | http://dx.doi.org/10.1080/02678292.2016.1209793 |
| Copyright: | 2016 Taylor & Francis |
| Appears in Collections: | Research Papers (SCM) |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| 2017_LC_44_379.pdf Restricted Access | Restricetd Access | 1.12 MB | Adobe PDF | View/Open Request a copy |
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