Photovoltaic properties of low temperature solution processed earth abundant CuO nanocrystal‐based hybrid solar cells

Abstract

p‐type copper oxide (CuO) nanocrystals were prepared by a wet chemical method and are used to make thin films by spin casting. CuO nanocrystals were characterised using XRD, Raman, TEM and XPS. Low temperature solution processed thin films of CuO crystals showed a hole mobility of 4.57 × 10−4 cm2 V−1 s−1 perpendicular to the plane of the film and is measured using space charge limited current method. Due to the difficulty in making solution processed homo p–n junction and n‐doping of CuO, a planar hybrid heterojunction solar cell is fabricated using solution processed CuO and a n‐type organic material, [6,6]‐phenyl‐C70 butyric acid methyl ester (PCBM). A power conversion efficiency of 0.23% is obtained for hybrid solar cell comprising CuO as active layer where all the device fabrications were carried out at temperature ≤100 °C. Analysis of the current density–voltage (J–V) characteristics at different light intensities is carried out to unravel the recombination mechanism occurring at the interface. Further, effect of annealing the active layer on the photovoltaic performance is investigated.

Efficiency Enhancement of Perovskite Solar Cells via Electrospun CuO Nanowires as Buffer Layers

“…Thus, we ascribe the efficiency enhancement of the ZnO NW device to the increase of interfacial area; see Figure c. The hole mobility of CuO is 1 order of magnitude higher than that of PEDDOT:PSS, as reported in refs and . Therefore, the holes would be inclined to transport through CuO NWs, as shown in Figure b.…”

A theoretical study for high-performance inverted p-i-n architecture perovskite solar cells with cuprous iodide as hole transport material

“…But at the same time, PEDOT: PSS suffers some critical issues such as hygroscopic and acidic nature which causes degradation and reduces the stability of the device. Furthermore, Inverted structure of PSCs is desirable for future roll-to-roll production because of low temperature and simple manufacturing processes [18,19]. In order to fabricate an efficient device, degradation process in PSCs should be controlled as CH3NH3PbI3 is vulnerable to moisture and oxygen and easily degraded [20].…”

Predicting the structural, optoelectronic, dynamical stability and transport properties of Boron-doped CaTiO3: DFT based study

“…The perovskite oxides ABO 3 , where A and B designate the rare earth and transition metal elements, respectively, have been the subject of much research from both an experimental and theoretical standpoint [3][4][5]. Structural formula ABO 3 is widely utilized in perovskite structures [6].…”