SOITEC’s 4 junction solar cell module one year on sun

Abstract

Abstract. During the last years SOITEC has co-developed a 4-junction solar cell (SmartCell TM ) with world record conversion efficiency. To verify suitability for concentrator application in SOITEC's Concentrix TM CPV module, early long-term outdoor performance monitoring was initiated. To date, some module prototypes have been already exposed for more than one year in desert environment; no performance degradation is observable. Accelerated ageing testing executed on the cells also indicates comparable reliability performance to standard triple junction concentrator solar cells.

Исследование Концентраторных Фотоэлектрических Модулей С Отражающими Элементами Вторичной Оптики

“…6, можно рассчитать допустимые углы разориентации W 0.9 , определяемые на уровне 90% от максимального значения кривой, для фокусирующей системы модулей, образованной линзой Френеля, размерами 120 × 120 mm с фокусом 225 mm и СЭ и размерами фотоприемной площадки 5.5 × 5.5 mm с фоконами разной конфигурации. Без фоконов W 0.9 составляет ±0.4 Полученные значения эффективности преобразования излучения разработанных концентраторных фотоэлектрических модулей с элементами вторичной оптики в виде фоконов соответствуют значениям лучших зарубежных аналогов [4,24].…”

Investigation of focusing properties of photovoltaic module concentrator in a wide temperature range

“…Taking into account the technological complexities in manufacturing the high-efficient multijunction solar cells in comparison with silicon-based solar cells, their " terrestrial" application is economically justified only together with concentrators of solar radiation. The recordbreaking efficiency of a concentrator module as obtained in laboratory conditions is 36.7% [4], but the efficiency of the full-sized in-situ concentrator modules is about 32% [5]. Studying characteristics of the concentrator systems, impact of the environmental conditions on focusing properties of the concentrators will allow increasing the efficiency of solar radiation conversion in the photovoltaic concentrator modules.…”

“…A concept of a solar energy installation is widely spread, and it is designed to provide two-axis tracking of a sun position and includes photovoltaic modules with a radiation concentrator panel and a panel of solar cells located in the concentrator focuses, like in [5,6]. The concentrator panel is a glass plate with a connected assembly of adjacent square concentrators made of an optically transparent silicone.…”