dc.contributor.author | Mohan, L | en_US |
dc.contributor.author | Ratnasingham, SR | en_US |
dc.contributor.author | Panidi, J | en_US |
dc.contributor.author | Daboczi, M | en_US |
dc.contributor.author | Kim, J-S | en_US |
dc.contributor.author | Anthopoulos, TD | en_US |
dc.contributor.author | Briscoe, J | en_US |
dc.contributor.author | McLachlan, MA | en_US |
dc.contributor.author | Kreouzis, T | en_US |
dc.date.accessioned | 2021-08-05T11:00:48Z | |
dc.date.available | 2021-07-30 | en_US |
dc.date.issued | 2021-08-07 | en_US |
dc.identifier.uri | https://qmro.qmul.ac.uk/xmlui/handle/123456789/73468 | |
dc.description.abstract | Copper(I) thiocyanate (CuSCN) is a stable, low-cost, solution-processable p-type inorganic semiconductor used in numerous optoelectronic applications. Here, for the first time, we employ the time-of-flight (ToF) technique to measure the out-of-plane hole mobility of CuSCN films, enabled by the deposition of 4 μm-thick films using aerosol-assisted chemical vapor deposition (AACVD). A hole mobility of ∼10-3 cm2/V s was measured with a weak electric field dependence of 0.005 cm/V1/2. Additionally, by measuring several 1.5 μm CuSCN films, we show that the mobility is independent of thickness. To further validate the suitability of our AACVD-prepared 1.5 μm-thick CuSCN film in device applications, we demonstrate its incorporation as a hole transport layer (HTL) in methylammonium lead iodide (MAPbI3) perovskite solar cells (PSCs). Our AACVD films result in devices with measured power conversion efficiencies of 10.4%, which compares favorably with devices prepared using spin-coated CuSCN HTLs (12.6%), despite the AACVD HTLs being an order of magnitude thicker than their spin-coated analogues. Improved reproducibility and decreased hysteresis were observed, owing to a combination of excellent film quality, high charge-carrier mobility, and favorable interface energetics. In addition to providing a fundamental insight into charge-carrier mobility in CuSCN, our work highlights the AACVD methodology as a scalable, versatile tool suitable for film deposition for use in optoelectronic devices. | en_US |
dc.language | eng | en_US |
dc.relation.ispartof | ACS Appl Mater Interfaces | en_US |
dc.rights | This is a pre-copyedited, author-produced version accepted for publication in ACS Applied Materials and Interfaces following peer review. The version of record is available https://pubs.acs.org/doi/10.1021/acsami.1c09750 | |
dc.subject | copper(I) thiocyanate | en_US |
dc.subject | hole transport material | en_US |
dc.subject | out-of-plane hole mobility | en_US |
dc.subject | perovskite solar cells | en_US |
dc.subject | time-of-flight technique | en_US |
dc.title | Determining Out-of-Plane Hole Mobility in CuSCN via the Time-of-Flight Technique To Elucidate Its Function in Perovskite Solar Cells. | en_US |
dc.type | Article | |
dc.rights.holder | © 2021 American Chemical Society | |
dc.identifier.doi | 10.1021/acsami.1c09750 | en_US |
pubs.author-url | https://www.ncbi.nlm.nih.gov/pubmed/34365787 | en_US |
pubs.notes | Not known | en_US |
pubs.publication-status | Published online | en_US |
qmul.funder | New applicant scheme::STFC | en_US |