Bipolaron Formation in Organic Solar Cells Observed by Pulsed Electrically Detected Magnetic Resonance
نویسندگان
چکیده
منابع مشابه
Bipolaron formation in organic solar cells observed by pulsed electrically detected magnetic resonance.
We report the observation of a spin-dependent dark transport current, exhibiting spin coherence at room temperature, in a π-conjugated polymer-fullerene blend using pulsed electrically detected magnetic resonance. The resonance at g = 2.0028(3) is due to polarons in the polymer, and exhibits spin locking at high microwave fields. The presence of an excess of fullerene, and the operating voltage...
متن کاملLock-in detection for pulsed electrically detected magnetic resonance.
We show that in pulsed electrically detected magnetic resonance (pEDMR) signal modulation in combination with a lock-in detection scheme can reduce the low-frequency noise level by one order of magnitude and in addition removes the microwave-induced non-resonant background. This is exemplarily demonstrated for spin-echo measurements in phosphorus-doped silicon. The modulation of the signal is a...
متن کاملCoherent defect spectroscopy with pulsed optically and electrically detected magnetic resonance
A short review of the theoretical and experimental foundations of pulsed optically and electrically detected magnetic resonance (pODMR and pEDMR, respectively) as well as their fields of applications is given. In comparison to electron spin resonance spectroscopy, ODMR and EDMR can be 8-10 orders of magnitude more sensitive which make them particularly useful for the investigation of defects in...
متن کاملElectrically detected magnetic resonance in a W-band microwave cavity.
We describe a low-temperature sample probe for the electrical detection of magnetic resonance in a resonant W-band (94 GHz) microwave cavity. The advantages of this approach are demonstrated by experiments on silicon field-effect transistors. A comparison with conventional low-frequency measurements at X-band (9.7 GHz) on the same devices reveals an up to 100-fold enhancement of the signal in...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Physical Review Letters
سال: 2010
ISSN: 0031-9007,1079-7114
DOI: 10.1103/physrevlett.105.176601