Ternary blend all-polymer solar cells: enhanced performance and evidence of parallel-like bulk heterojunction mechanism
Hwang, Y; Courtright, BAE; Jenekhe, SA
| HERO ID | 3125588 |
|---|---|
| In Press | No |
| Year | 2015 |
| Title | Ternary blend all-polymer solar cells: enhanced performance and evidence of parallel-like bulk heterojunction mechanism |
| Authors | Hwang, Y; Courtright, BAE; Jenekhe, SA |
| Volume | 5 |
| Issue | 2 |
| Page Numbers | 229-234 |
| Abstract | All-polymer solar cells composed of binary blends of donor poly[4,8-bis(5-(2-ethylhexyl)thiophen-2-yl)benzo[1,2-b;4,5-b']dithiophene-2,6-diyl-alt-(4-(2-ethylhexanoyl)-thieno[3,4-b]thiophene-)-2-6-diyl)] (PBDTTT-CT), and acceptor polymers naphthalene diimide-selenophene copolymer (PNDIS-HD) and perylene diimide-selenophene copolymer (PPDIS) had power conversion efficiencies (PCEs) of 1.3 and 2.1%, respectively. Ternary blend solar cells composed of [PBDTTT-CT][PNDIS-HD](1-x)[PPDIS](x) at 75 wt% PPDIS had a PCE of 3.2%, which is about a 50%-140% enhancement compared with the binary blend devices. Equality of the ternary blend short-circuit current to the sum of those of the binary blend devices, among other results, provided evidence of a parallel-like bulk heterojunction mechanism in the ternary blend solar cells. These results provide the first example of enhanced performance in ternary blend all-polymer solar cells. |
| Doi | 10.1557/mrc.2015.36 |
| Wosid | WOS:000358147300011 |
| Url | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84946473980&doi=10.1557%2fmrc.2015.36&partnerID=40&md5=b529481e8f95ac79831da1954e3b11a3 |
| Is Certified Translation | No |
| Dupe Override | No |
| Comments | Journal:MRS COMMUNICATIONS 2159-6859 |
| Is Public | Yes |
| Language Text | English |